UNIVERSE
made of an infinite amount of space,
matter and time.
the start of the universe, the universe
has no beginning and no end; perhaps
the same photons that have always been
in the universe continue to move in the
space that has always been.
particles of light humans have named
"photons". Photons are the base unit
of all matter from the tiniest
particles to the largest galaxies.1
FOO
TNOTES
1. ^ Ted Huntington.
meters every second in a line, but as
pieces of matter, can be slightly
slowed from the force of gravity, and
stop for an instant when they collide.1
FOOTNOTES
1. ^ Ted Huntington
and so photons form structures such as
protons, atoms, molecules, molecule
groups (like all of life of earth),
planets, stars, galaxies, and clusters
of galaxies.
galaxies we can see are only a tiny
part of the universe. 1 Most of the
galaxies in the universe we will never
see because they are too far away for
even 1 particle of light from them to
be going in the exact direction of our
tiny location, or are captured by atoms
between here and there. 2
FOOTNOTES
1. ^ Carl Sagan, "Cosmos", Carl Sagan
Productions, KCET Los Angeles, (1980).
(estimate of how many galaxies)
2. ^ Ted
Huntington
clear. Photons form gas clouds of
Hydrogen and Helium, these gas clouds,
called nebuli condense to form galaxies
of stars. The stars emit photons back
out into the rest of the universe,
where they collect and form clouds
again. Around each star are many
planets and pieces of matter. On many
of those planets intelligent life
evolves. This life moves their stars
out of spiral galaxies to form globular
clusters, and ultimately to transform
spiral galaxies into elliptical
galaxies that travel the universe
looking for more matter to fuel their
movement.
It may very well be that stars at this
scale are photons, spiral galaxies
charged particles, globular galaxies
neutral particles, and galactic
clusters atoms at a much larger scale
in an infinite macro and micro scale.1
FOOTNOTES
1. ^ Ted Huntington
from a gas cloud that formed by
capturing matter in the form of light
from other stars, from the remains of a
previously destroyed galaxy, or some
combination of the two.
1
eventually orbit forms, perhaps in a
nebula, when matter in the nebula
starts accumulating and rotating as a
result of gravity, or from the remains
of an exploded star that condensed
again under the influence of gravity.
FOOTNOTES
1. ^ Ted Huntington
move closer to the center and lighter
atoms are sent farther out.
Terrestrial planets are red hot, have
surface of melted rock, all lighter
atoms float to the surface of the
molten planets. All the H2O from the
first earth oceans and lakes is in the
atmosphere in gas form.
ways:
1) spherical planet collides with
earth, moon forms from remaining matter
in ring around earth.
2) spherical planet is
caught in earth orbit
3) moon of earth forms
naturally from original matter of star
system in orbit around earth.
3 4
4,571 million years old.1 2
FOOTNOTES
1. ^
http://www.sciencemag.org/cgi/content/fu
ll/288/5472/1819?maxtoshow=&HITS=10&hits
=10&RESULTFORMAT=&fulltext=zag+morocco&s
earchid=1129920472874_9236&stored_search
=&FIRSTINDEX=0#RF2
2. ^
http://news.bbc.co.uk/1/hi/sci/tech/7830
48.stm
3. ^
http://www.sciencemag.org/cgi/content/fu
ll/288/5472/1819?maxtoshow=&HITS=10&hits
=10&RESULTFORMAT=&fulltext=zag+morocco&s
earchid=1129920472874_9236&stored_search
=&FIRSTINDEX=0#RF2 (4.7 +- .2 billion
years)
4. ^ sci has 4.7 +- .2 by where did
4.571 come from?
[1] The ''Zag'' meteorite fell to Earth
in 1988 COPYRIGHTED
source: http://news.bbc.co.uk/1/hi/sci/t
ech/783048.stm
Apollo missions (4.53 billions old).
[1]
http://www.nasm.si.edu/exhibitions/attm/
atmimages/S73-15446.f.jpg
http://www.nasm.si.edu/exhibitions/attm/
nojs/wl.br.1.html
source:
LIFE
2
FOOTNOTES
1. ^ The geological Society of America
ucmp.berkeley.edu
2. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
cools into thin crust, H2O condenses
from the atmosphere by raining, filling
the lowest parts of land to make the
first earth oceans, lakes, and rivers.1
FOOTNOTES
1. ^ part about rain and streams going
to bottom of land:
http://www.ersdac.or.jp/Others/geoessay_
htm/geoessay_e/geo_text_09_e.htm
meteorite) zircon yet found on earth,
4.404 billion years old, from Gneiss in
West Australia, is evidence that the
crust and liquid water were on the
surface of earth 4.4 billion years
before now.1
FOOTNOTES
1. ^
http://www.nature.com/nature/links/01011
1/010111-1.html
[1]
http://www.geology.wisc.edu/zircon/Earli
est%20Piece/Images/8.jpg
source:
sugars, the components of living
objects are created on earth. These
molecules are made in the oceans, fresh
water, and or atmosphere of earth (or
other planets) by lightning, photons
with ultraviolet frequency from the
star, or ocean floor volcanos.
nucleotides), proteins (polymers made
of amino acids), carbohydrates
(polymers made of sugars) and lipids
(glycerol attached to fatty acids)
evolved is not clearly known.
Some proteins and nucleic acids have
been formed in labs by using clay which
can dehydrate and which provides long
linear crystal structures to build
proteins and nucleic acids on. Amino
acids join together to form
polypeptides when an H2O molecule is
formed from a Hydrogen (H) on 1 amino
acid and a hydroxyl (OH) on the second.
Are all proteins, carbohydrates, lipids
and DNA the products of living objects?
Is RNA the only molecule of these that
was made without the help of living
objects?
The most popular theory now has RNA
(and potentially lipids) evolving first
before any living objects.
There is still a large amount of
experiment, exploration and education
that needs to be done to understand the
origins of living objects on planet
earth. My opinion is that as soon as
there was liquid water on the earth,
4.4 billion years before now, as zircon
crystals show, the construction of
living objects started on earth.
Perhaps RNA molecules, called
"ribozymes" evolved which can make
copies of RNA, by connecting free
floating nucleotides that match a
nucleotide on the same or a different
RNA, without any proteins. But until
such ribozyme RNA molecules are found,
the only molecule known to copy nucleic
acids are proteins called polymerases.
If such ribozymes exist, then one of
the first coded instructions on the RNA
molecule that was the ancestor of every
living species, must have been the code
to make this ribozyme.
creation of various Transfer RNA (tRNA)
molecules.
Random mutations in the copying (and
perhaps even in the natural formation)
of RNA molecules probably created a
number of the necessary tRNAs (transfer
RNA, an RNA molecule responsible for
matching free floating amino acid
molecules to 3 nucleotide sequences on
other RNA molecules).
This would be a precellular protein
assembly system, where tRNA (transfer
RNA) molecules can build polypeptide
chains of amino acids by linking
directly to other RNA strands.
Part of each tRNA molecule bonds with a
specific amino acid, and a 3 nucleotide
sequence from a different part of the
tRNA molecule bonds with the opposite
matching 3 nucleotide sequence on an
(m)RNA molecule.
Since there are tRNA molecules for each
amino acid (although some tRNAs can
attach to more than one amino acid?),
there must have been a slow
accumulation of various tRNA molecules
for each of the 20 amino acids used in
constructing polypeptides in cells
living now. Perhaps after the
evolution of the first tRNA, the first
polypeptides were chains of all the
same one amino acid. With the
evolution of a second tRNA polypeptides
would have more variety because now two
amino acids would be available to build
polypeptides.
This polypeptide assembly system may
exist freely in water, or within a
liposome1 . This sytem builds many
more proteins than would be built
without such a system. The mRNA with
the code to make copier RNA, now also
contains the code to produce various
tRNA molecules. These molecules
function as a unit, and proto-cell,
with the rest of the mRNA initially
containing random codes for random
proteins.
For the first time, RNA code represents
a template for other RNA molecules, but
also a template for building proteins
with the help of tRNA molecules.
There is some question of where the
origin of the first cell took place,
near volcanos on the ocean floor, or in
fresh water lakes and tidal pools near
volcanos on land, because unprotected
nucleic acids cannot exist for much
time in the ocean because of Sodium and
Chlorine.
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005). supports
liposome theory
Ribosomal RNA moves down mRNA molecules
functioning as a platform for bringing
the mRNA and tRNA molecules together to
assemble polypeptides (proteins).
This rRNA serves as an early ribosome;
objects that serve as sites for
building polypeptides and are found in
every cell. As time continues the
ribosome will grow to include two more
RNA molecules, some protein molecules,
and a second half that will make
polypeptide construction more
efficient.
The rRNA serves the purpose of bringing
amino acids close enough to bond with
each other to form polypeptides.
As an rRNA moves down an mRNA, tRNA
molecules bond with the mRNA and on the
opposite side of the tRNA, a matching
amino acid (separates? from the tRNA
and) attaches to a growing polypeptide
chain.
Now the mRNA that is the
ancestral/progenitor of all of life,
contains the code for the copier RNA,
tRNAs, and the rRNA molecule. These
nucleic acids function as a unit, and
proto-cell.
importance is built, an RNA polymerase.
A molecule that can more efficiently
copy RNA.
is built by the early ribosome protein
making protocell. This protein changes
ribonucleotides into
deoxyribonucleotides. This allows the
first DNA molecule on earth to be
assembled.
Ribonucleotide reductase may be the
molecule that allowed DNA to be the
template for the line of cells that
survived to now.
to copy DNA by assembling DNA
nucleotides from other DNA molecules.
causes the early ribosome to create
reverse transcriptase, a protein that
can assemble DNA molecules from an RNA
molecule template.
With this advance, a DNA molecule can
be constructed that has all of the code
that was stored on the long evolved RNA
molecule. DNA now serves as a more
stable template for making mRNA, each
tRNA, rRNA, and the RNA and DNA
polymerases.
RNA polymerase proteins build RNA
molecules using the new DNA template,
that still perform their original
polypeptide building function together
with the tRNA and rRNA molecules, but
are labeled "mRNA" (Messenger RNA)
because they move from DNA to ribosome.
around DNA, made of proteins. This
membrane holds water inside a cell.
This is the first cell. rRNA
comparison shows that this is most
likely a eubacterium.1
DNA produces instructions for
cytoplasm, the cytoplasm is assembled
from proteins made by the ribosome.
For the first time, DNA and ribosomes
are building cell structure. The
templates for each tRNA, rRNA, mRNA and
DNA polymerase proteins are already
coded in a central strand of DNA. DNA
protected by cytoplasm is more likely
to survive and copy. This cell is
heterotrophic and has no metabolism to
produce ATP. Amino acids, nucleotides,
H2O, and other molecules enter and exit
the cytoplasm only because of a
difference in concentration from inside
and outside the cell (passive
transport) and represent the beginnings
of the first digestive system. This
either happens in fresh water lakes or
in salty oceans, perhaps near lava
vents on or under the ocean floor. As
this line of DNA continues to make
copies of itself, all copies now have
cytoplasm. The DNA is composed mainly
of instructions to assemble the nucleic
acids and proteins needed to build
ribosomes, polymerases and cytoplasm.
This cell structure forms the basis of
all future cells of every living object
on earth. These first cells are
anaerobic (do not require free oxygen)
and heterotrophic, meaning that they do
not make their own food: amino acids,
nucleotides, phosphates, and sugars.
These bacteria depend on these
molecules and photons in the form of
heat to reproduce and grow.
A system of division must evolve which
attaches the original and newly
synthesized copy of DNA to the
cytoplasm, so that as the cell grows,
the two copies of DNA can be separated
and the first membraned cells can
divide into two cells. This is the
beginning of the "binary fission"
method of cell division. Division of
the cell begins with the division of
the DNA membrane-attachment site and
separates by the growth of new
cytoplasm.
FOOTNOTES
1. ^ source for eubacteria as oldest
rRNA. Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989). p48 first step in
prokaryote division is
membrane-attachment site divides.
prokaryote DNA attaches to cell
membrane, and new membrane growth moves
apart
circle allows the DNA polymerase to
make continuous copies of the cell.
molecules into and out of the cytoplasm
(facilitative diffusion) evolve.1
FOOTN
OTES
1. ^
http://www.cat.cc.md.us/~gkaiser/biotuto
rials/eustruct/cmeu.html
[1] Uniporters are transport proteins
that transport a substance across a
membrane down a concentration gradient
from an area of greater concentration
to lesser concentration. The transport
is powered by the potential energy of a
concentration gradient and does not
require metabolic energy.
source: http://www.cat.cc.md.us/~gkaiser
/biotutorials/eustruct/cmeu.html
[2] Channel proteins transport water
or certain ions down a concentration
gradient from an area of higher
concentration to an area of lower
concentration. In the case of water,
the channel proteins are called
aquaporins. Water molecules are small
enough that they can also pass between
the phospholipids in the cytoplasmic
membrane by passive diffusion.
source:
from bacteria, or are initially
bacteria. These cells depend on the
DNA duplicating and protein producing
systems of other cells to reproduce
themselves. Over time, more effective,
and efficient virus designs will
survive.1
FOOTNOTES
1. ^
http://cellbio.utmb.edu/cellbio/rer2.htm
cytoplasm. Cells can now make ATP from
glucose and eventually other
monosaccharides, the end product is
pyruvate.
The glycolysis equation is:
C6H12O6
(glucose) + 2 NAD+ + 2 ADP + 2 P
-----> 2 pyruvic acid, (CH3(C=O)COOH +
2 ATP + 2 NADH + 2 H+
cytoplasm. Cells (all anaerobic) can
now make more ATP and convert pyruvate
(the final product of glycolysis) to
lactate (an ionized form of lactic
acid).1
FOOTNOTES
1. ^
http://216.239.63.104/search?q=cache:3s2
stckAJoMJ:www.nmc.edu/~ftank/115f04/Ch%2
5209%2520Notes.pdf+cellular+respiration+
oldest&hl=en
evolves in the cytoplasm. Cells (all
anaerobic) can now convert pyruvate
(the final product of glycolysis) to
ethanol.1
FOOTNOTES
1. ^
http://216.239.63.104/search?q=cache:3s2
stckAJoMJ:www.nmc.edu/~ftank/115f04/Ch%2
5209%2520Notes.pdf+cellular+respiration+
oldest&hl=en
1
that can assemble lipids.
FOOTNOTES
1. ^ find biomarker evidence
metabolism (ATP) to transport molecules
into and out of the cytoplasm (active
transport) evolve.1
FOOTNOTES
1. ^
http://www.cat.cc.md.us/~gkaiser/biotuto
rials/eustruct/cmeu.html
[1] TP: not clear what the red circles
are, some kind of molecule I
guess. Antiporters are transport
proteins that simultaneously transport
two substances across the membrane in
opposite directions; one against the
concentration gradient and one with the
concentration gradient. Antiporters
typically use proton motive force to
transport a substrate across the
membrane. The movement of protons
across the membrane (proton motive
force) provides the energy for
transporting the substrate across the
membrane against its concentration
gradient..
source: http://www.cat.cc.md.us/~gkaiser
/biotutorials/eustruct/cmeu.html
[2] Symporters are transport proteins
that simultaneously transport two
substances across the membrane in the
same direction; one against the
concentration gradient and one with the
concentration gradient. Symporters
often use proton motive force to
transport a substrate across the
membrane. The movement of protons
across the membrane (proton motive
force) provides the energy for
transporting the substrate.
source:
evolves in prokaryotes. Now some
prokaryotes can exchange circular
pieces of DNA (plasmids), through tubes
(pili). Conjugation may be the process
that led to sex (cellular fusion) and
also the transition from a circle of
DNA to chromosomes in eukaryotes, since
some protists (cilliates and some
algae) reproduce sexually by
conjugation.1
FOOTNOTES
1. ^ conjugation in protists, flagella
in eukaryotes: Michael Sleigh,
"Protozoa and Other Protists", (London;
New York: Edward Arnold, 1989).
[1] the fertility factor or F factor is
a very large (94,500 bp) circular dsDNA
plasmid; it is generally independent of
the host chromosome. COPYRIGHTED
source: http://www.mun.ca/biochem/course
s/3107/images/Fplasmidmap.gif
[2] conjugation (via pilus)
COPYRIGHTED EDU
source: http://www.bio.miami.edu/dana/16
0/conjugation.jpg
FOOTN
OTES
1. ^ conjugation in protists, flagella
in eukaryotes: Michael Sleigh,
"Protozoa and Other Protists", (London;
New York: Edward Arnold, 1989).
allow certain proteins coded by DNA to
not be built, evolve. Proteins bind
with these DNA sequences to stop RNA
polymerase from building mRNA molecules
which would be translated into
proteins. Operons allow a bacterium to
produce certain proteins only when
necessary. Bacteria before now can
only build a constant stream of all
proteins encoded in their DNA.1 2
FOOTN
OTES
1. ^
http://info.bio.cmu.edu/Courses/03441/Te
rmPapers/99TermPapers/GenEvo/operon.html
2. ^
http://web.indstate.edu/thcme/mwking/gen
e-regulation.html#table
eubacteria.
[1] This is an image of nitrogen cycle
taken from this [1] EPA website. PD
source: http://en.wikipedia.org/wiki/Ima
ge:Nitrogen_Cycle.jpg
filment growth evolves in prokaryotes.
1
prokaryotes evolve. Heterocysts evolve
in cyanobacteria.
Heterocysts are specialized
nitrogen-fixing cells formed by some
filamentous cyanobacteria during
nitrogen starvation.
FOOTNOTES
1. ^ "Heterocyst". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Heterocyst
[1] Anabaena COPYRIGHTED EDU
source: http://home.manhattan.edu/~franc
es.cardillo/plants/monera/anabaena.gif
[2] Anabaena smitthi COPYRIGHTED
FRANCE
source: http://www.ac-rennes.fr/pedagogi
e/svt/photo/microalg/anabaena.jpg
can produce some if not all of their
own food (amino acids, nucleotides,
sugars, phophates, lipids, and
carbohydrates), but require phosphorus,
nitrogen, CO2, water and light in the
form of heat.1
There are only 2 kinds of autotrophy:
Lithotrophy and Photosynthesis. These
are lithotrophic cells that change
inorganic (abiotic) molecules into
organic molecules. These cells are
archaebacteria, called methanogens that
perform the reaction: 4H2 + CO2 -> CH4
+ 2H2O. They convert CO2 into Methane.
Methane is better than CO2 for
trapping heat, and could have
contributed to heating the earth.
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
cells only have Photosystem I.
Photosynthesis Photosystem I evolves in
early anaerobic prokaryote cells. One
of two photosythesis systems,
photosystem I uses a pigment
chlorophyll A, absorbs photons in 700
nm wave lengths best, breaking the bond
betwenn H2 and S. They are anaerobic
and perform the reaction: H2S
(Hydrogen Sulfide) + CO2 + light ->
CH2O (Formaldehyde) + 2S.
evolves in early prokaryote cells.
Photosystem 2 absorbs photons best at
680nm wavelengths, a higher frequency
of light than Photosystem I. These
cells can break the strong Hydrogen
bonds between Hydrogen and Oxygen in
water molecules (more abundant than
Sulphur). This system emits free
Oxygen.1
The simple equation of photosynthesis
is: 6 H2O + 6 CO2 + photons = C6H12O6
(glucose) + 6O2. The detailed steps of
photosynthesis are called the "Calvin
Cycle". Prokaryote cells can now
produce their own glucose to store and
be converted to ATP by glycolysis and
fermentation later.
This sytem is the main system
responsible for producing the Oxygen
now in the air of earth.
FOOTNOTES
1. ^
http://www.emc.maricopa.edu/faculty/fara
bee/BIOBK/BioBookPS.htmlhttp://www.ebi.a
c.uk/interpro/potm/2004_11/Page1.htm3
2
the "Citric Acid Cycle", and the "Krebs
Cycle") evolves, probably in
cyanobacteria, as a substitute for
fermentaton, by using oxygen to break
down the products of glycolysis,
pyruvic acid, to CO2 and H2O, producing
18 more ATP molecules.1
This is the
first aerobic cell, a cell that has an
oxygen based metabolism. This cell
uses oxygen to convert glucose (and
eventually other sugars and fats) into
CO2, H2O and ATP. For example, cells
that oxidize glucose perform the
reaction:
C6H12O6 + 6 O2 + 38 ADP + 38 phosphate
-> 6 CO2 + 6 H2O + 38 ATP
This reaction
(with glycolysis) can produce up to 36
ATP molecules. Cellular respiration is
the opposite (although the specific
reactions differ) of photosynthesis
which starts with H2O and CO2 and
produces glucose.
FOOTNOTES
1. ^ "Aerobic organism". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Aerobic_org
anism
2. ^ Ted Huntington,. my own guess
based on absence of published
information
[1] kreb cycle from
http://people.unt.edu/~hds0006/tca/
source:
8 9 10 11 12 13 14
estimates of when the first Eubacteria
and Archaea evolved. Eubacteria and
Archaea (also called Archaebacteria)
are the two major lines of Prokaryotes.
Prokaryotes are the most primitive
living objects ever found. In contrast
to the later evolved Eukaryotes,
Prokaryotes have a circle of DNA
located in their cytoplasm (not
chromosomes) and have no nucleus. At
least one genetic comparison shows
Eubacteria and Archaea evolving now.1 2
3 4 5 6 7
After the full genomes of all living
species are known, and understood we
will have more certainty about the
history of evolution. Many genetic
trees are based on DNA genes (sequences
of DNA that define nucleic acids or
proteins). In particular the genes for
ribosomal RNA are thought to be very
conserved over time, although perhaps
genes for reproduction, or cytoplasm,
for example may later prove to be more
conserved over time.
FOOTNOTES
1. ^
http://www.nature.com/nrg/journal/v3/n11
/full/nrg929_fs.html
2. ^ Russell F. Doolittle, Da-Fei Feng,
Simon Tsang, Glen Cho, Elizabeth
Little, "Determining Divergence Times
of the Major Kingdoms of Living
Organisms with a Protein Clock",
Science, (1996). 2142-1873my
3. ^ Richard Dawkins,
"The Ancestor's Tale", (Boston, MA:
Houghton Mifflin Company, 2004). 2300my
4. ^
Battistuzzi, Feijao, Hedges, "A Genomic
timescale of prokaryote evolution:
insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004). 4100my (has arche b4
eu)
5. ^ Osawa, S., Honjo, "Archaebacteria
vs Metabacteria : Phylogenetic tree of
organisms indicated by comparison of 5S
ribosomal RNA sequences.", (Tokyo:
Springer, Tokyo/ Berlin eds.:"Evolution
of Life", pp. 325-336,, 1991). 1800my
6. ^ S.
Blair Hedges, "The Origin and Evolution
of Model Organisms", Nature Reviews
Genetics 3, 838-849;
doi:10.1038/nrg929, (2002). 4000my
7. ^ S.
Blair Hedges and Sudhir Kumar, "Genomic
clocks and evolutionary timescales",
Trends in Genetics Volume 19, Issue 4 ,
April 2003, Pages 200-206, (2003).
3970my
8. ^
http://www.nature.com/nrg/journal/v3/n11
/full/nrg929_fs.html
9. ^ Russell F. Doolittle, Da-Fei Feng,
Simon Tsang, Glen Cho, Elizabeth
Little, "Determining Divergence Times
of the Major Kingdoms of Living
Organisms with a Protein Clock",
Science, (1996). 2142-1873my
(2142-1873my)
10. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). 2300my (2300my)
11. ^
Battistuzzi, Feijao, Hedges, "A Genomic
timescale of prokaryote evolution:
insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004). 4100my (has arche b4
eu) (4100my)
12. ^ Osawa, S., Honjo,
"Archaebacteria vs Metabacteria :
Phylogenetic tree of organisms
indicated by comparison of 5S ribosomal
RNA sequences.", (Tokyo: Springer,
Tokyo/ Berlin eds.:"Evolution of Life",
pp. 325-336,, 1991). 1800my (1800my)
13. ^ S.
Blair Hedges, "The Origin and Evolution
of Model Organisms", Nature Reviews
Genetics 3, 838-849 (2002);
doi:10.1038/nrg929, (2002). 4000my
(4000my)
14. ^ S. Blair Hedges and Sudhir Kumar,
"Genomic clocks and evolutionary
timescales", Trends in Genetics
Volume 19, Issue 4 , April 2003, Pages
200-206, (2003). 3970my (3970my)
[1] Figure 1) Changing views of the
tree and timescale of life. a) An
early-1990s view, with the tree
determined mostly from ribosomal RNA
(rRNA) sequence analysis. This tree
emphasizes vertical (as opposed to
horizontal) evolution and the close
relationship between eukaryotes and the
Archaebacteria. The deep branching
(>3.5 Giga (109) years ago, Gya) of
CYANOBACTERIA (Cy) and other Eubacteria
(purple), the shallow branching
(approx1 Gya) of plants (Pl), animals
(An) and fungi (Fu), and the early
origin of mitochondria (Mi), were based
on interpretations of the geochemical
and fossil record7, 8. Some deeply
branching amitochondriate (Am) species
were believed to have arisen before the
origin of mitochondria44. Major
symbiotic events (black dots) were
introduced to explain the origin of
eukaryotic organelles42, but were not
assumed to be associated with large
transfers of genes to the host nucleus.
They were: Eu, joining of an
archaebacterium host with a eubacterium
(presumably a SPIROCHAETE) to produce
an amitochondriate eukaryote; Mi,
joining of a eukaryote host with an
alpha-proteobacterium (Ap) symbiont,
leading to the origin of mitochondria,
and plastids (Ps), joining of a
eukaryote host with a cyanobacterium
symbiont, forming the origin of
plastids on the plant lineage and
possibly on other lineages. b) The
present view, based on extensive
genomic analysis. Eukaryotes are no
longer considered to be close relatives
of Archaebacteria, but are genomic
hybrids of Archaebacteria and
Eubacteria, owing to the transfer of
large numbers of genes from the
symbiont genome to the nucleus of the
host (indicated by coloured arrows).
Other new features, largely derived
from molecular-clock studies16, 39 (Box
1), include a relatively recent origin
of Cyanobacteria (approx2.6 Gya) and
mitochondria (approx1.8 Gya), an early
origin (approx1.5 Gya) of plants,
animals and fungi, and a close
relationship between animals and fungi.
Coloured dashed lines indicate
controversial aspects of the present
view: the existence of a
premitochondrial symbiotic event and of
living amitochondriate eukaryotes,
ancestors of which never had
mitochondria. c) The times of
divergence of selected model organisms
from humans, based on molecular clocks.
For the prokaryotes (red), because of
different possible origins through
symbiotic events, divergence times
depend on the gene of interest.
source: http://www.nature.com/nrg/journa
l/v3/n11/full/nrg929_fs.html
[2] Figure 2 A phylogeny of
prokaryotes. The relationships of
selected prokaryote model organisms
based on recent studies14-19. Times of
divergence (million years ago (Mya)
plusminus one standard error) are
indicated at nodes in the tree16, 39.
Branch lengths are not proportional to
time. Phyla and phylum-level groupings
are indicated on the right.
source: http://www.nature.com/nrg/journa
l/v3/n11/full/nrg929_fs.html
4
evolve.1 2 3
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ nature v417 n6886
3. ^
Battistuzzi, Feijao, Hedges, "A Genomic
timescale of prokaryote evolution:
insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
4. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
[1] tree of archaebacteria (archaea)
COPYRIGHTED
source: http://www.uni-giessen.de/~gf126
5/GROUPS/KLUG/Stammbaum.html
[2] A phylogenetic tree of living
things, based on RNA data, showing the
separation of bacteria, archaea, and
eukaryotes. Trees constructed with
other genes are generally similar,
although they may place some
early-branching groups very
differently, thanks to long branch
attraction. The exact relationships of
the three domains are still being
debated, as is the position of the root
of the tree. It has also been suggested
that due to lateral gene transfer, a
tree may not be the best representation
of the genetic relationships of all
organisms. NASA
source: http://en.wikipedia.org/wiki/Ima
ge:PhylogeneticTree.jpg
4
evolves.1 2 3
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ nature v417 n6886
3. ^
Battistuzzi, Feijao, Hedges, "A Genomic
timescale of prokaryote evolution:
insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
4. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
[1] tree of archaea ?
source: http://www.uni-giessen.de/~gf126
5/GROUPS/KLUG/Stammbaum.html
[2] Microscopia elettronica a
scansione dell'archeobatterio
termoacidofilo Sulfolobus solfataricus
COPYRIGHT ITALY
source: http://www.area.fi.cnr.it/r&f/n6
/ingrand.htm
3
(Aquifex, Thermotoga, etc.) evolve
now.1 2
FOOTNOTES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Brocks, Buick, "A
reconstruction of Archean biological
diversity based on", Geochimica et
cosmochimica acta, (2003).
3. ^ Battistuzzi,
Feijao, Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
[1] Aquifex pyrophilus (platinum
shadowed). © K.O. Stetter & Reinhard
Rachel, University of Regensburg.
source: http://biology.kenyon.edu/Microb
ial_Biorealm/bacteria/aquifex/aquifex.ht
m
[2] Aquifex aeolicus. © K.O. Stetter
& Reinhard Rachel, University of
Regensburg.
source: http://biology.kenyon.edu/Microb
ial_Biorealm/bacteria/aquifex/aquifex.ht
m
also the oldest Banded Iron Formation,
on Akilia Island in Western Greenland.
The oldest evidence for life on earth
was found in this rock by measuring the
ratio of carbon 12 to carbon 13 in
grains of apatite (calcium phosphate)
from this rock. Life uses the lighter
Carbon-12 isotope and not Carbon-13 and
so the ratio of carbon-12 to carbon-13
is different from a nonliving source
(calcium carbonate or limestone).1 2
FO
OTNOTES
1. ^ Mojzsis, et al. nature nov 7,
1996
http://www.nature.com/cgi-taf/DynaPage.t
af?file=/nature/journal/v384/n6604/index
.html, 2:102,
2. ^
http://jersey.uoregon.edu/~mstrick/Rogue
ComCollege/RCC_Lectures/Banded_Iron.html
source: nature 11/7/96
Banded Iron Formation Rocks. These
rocks are sedimentary. They are made
of iron rich chert (silicates, like
SiO2). These rocks have alternative
bands of orange or yellow and black.
In the red parts the iron is oxydized
(contains iron oxides, either hematite
{Fe2O3 = rust} or magnetite {Fe3O4]}).1
2 3 4 5
These bands may have formed because
photosynthetic bacteria (in
stromatolites found in shallow ocean
shores, and purple bacteria floating in
water) produce oxygen from CO2 during
photosynthesis. When the level of
oxygen in the water became too high,
many bacteria died, and this cycle
created the BIF. But BIF also may form
naturally when photons in uv
frequencies split H2O into H2 and O2.
So perhaps the BIF bands represent
cycles of more or less uv light
reaching the earth. Perhaps the
alternating phenomenon is similar to
eukaryotic algal blooms. In any event,
this free oxygen bonded with the many
tons of iron dissolved in the water to
form insoluable iron oxide which then
fell to the ocean floor to form the
orange layers of Banded Iron Formation.
How these alternating bands are made
is not clear and has not yet been
duplicated in a lab.
This cycle of alternating orange and
black bands will continue for 2 billion
years until 1,800 million years before
now. This is the beginning of oxygen
production on earth, the atmosphere of
earth still has only small amounts of
oxygen at this time.
FOOTNOTES
1. ^ Roger Lewin, "Thread of Life",
(New York: Smithsonian Books, 1982).
p102
2. ^
http://jersey.uoregon.edu/~mstrick/Rogue
ComCollege/RCC_Lectures/Banded_Iron.html
3. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
4. ^ "Banded
iron formation". Wikipedia. Wikipedia,
2008.
http://en.wikipedia.org/wiki/Banded_iron
_formation
source: nature 11/7/96
2
FOOTNOTES
1. ^ The geological Society of America
ucmp.berkeley.edu
2. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
3
Greenland Banded Iron Formation
sediment are evidence of the existence
of Archaea.1 2
FOOTNOTES
1. ^
http://www.ucmp.berkeley.edu/archaea/arc
haeafr.html
2. ^ Jürgen Hahn & Pat Haug. 1986.
Traces of Archaebacteria in ancient
sediments. System. Appl. Microbiol. 7:
178-183. (Archaebacteria '85
Proceedings).
3. ^
http://www.ucmp.berkeley.edu/archaea/arc
haeafr.html
2
and Hydrocarbon molecules (alkanes)
detected in 3760 billion year old Isua
Banded Iron Formation, indicate the
possibility of photosynthetic sulfate
reducing bacteria (Archaea, for example
Sulpholobus) and Cyanobacteria living
at that time.1
FOOTNOTES
1. ^ Systematic and Applied
Microbiology, Vol 7, pp 178-183 1986
2. ^
Systematic and Applied Microbiology,
Vol 7, pp 180-189 1986
2
in Isua, Greenland Banded Iron
Formation evidence of prokaryote Oxygen
photosynthesis.1
FOOTNOTES
1. ^ Earth and Planetary Science
Letters Volume 217, Issues 3-4 , 15
January 2004, Pages 237-244U-rich
"Archaean sea-floor sediments from
Greenland - indications of >3700 Ma
oxygenic photosynthesis" Minik T.
Rosing and Robert Frei
2. ^ Earth and
Planetary Science Letters Volume 217,
Issues 3-4 , 15 January 2004, Pages
237-244U-rich "Archaean sea-floor
sediments from Greenland - indications
of >3700 Ma oxygenic
photosynthesis" Minik T. Rosing and
Robert Frei
yet found. Stromatolites made by
photosynthetic bacteria found in both
Warrawoona, Western Australia, and Fig
Tree Group, South Africa.1 2
FOOTNOTES
1. ^ nature feb 6, 1986
2. ^ nature apr 3,
1980
[1] image on left is from swaziland
source: nature feb 6
source: 1986
thought to be cyanobacteria, found in
3,500 Million Year old chert from South
Africa and 3,465 Million year old Apex
chert of north-western Australia.1 2 3
4 5
FOOTNOTES
1. ^ warrawoona Nature416, 73 - 76
(07 Mar 2002) Letters to Nature
http://www.nature.com/nature/journal/v
416/n6876/full/416073a_fs.html
2. ^ swaziland Nature 314, 530-532
(11 Apr 1985) Letters to
Editor "Filamentous microfossils from
the 3,500-Myr-old Onverwacht Group,
Barberton Mountain Land, South Africa"
3. ^
argues that these are not
fossils: http://www.nature.com/nature/j
ournal/v420/n6915/full/420476b.html
"we contend that the Raman spectra of
Schopf et al.1 indicate that these are
disordered carbonaceous materials of
indeterminate origin. We maintain that
Raman spectroscopy cannot be used to
identify microfossils unambiguously,
although it is a useful technique for
pinpointing promising microscopic
entities for further investigation."
4. ^
http://www.nature.com/news/2002/020304/f
ull/020304-6.html "Gloves are coming
off in ancient bacteria bust-up." 2002
5. ^
http://www.nature.com/nature/journal/v41
6/n6876/full/416076a.html braiser et
al. "Questioning the evidence for
Earth's oldest fossils"
[1] Figure 1 Optical photomicrographs
showing carbonaceous (kerogenous)
filamentous microbial fossils in
petrographic thin sections of
Precambrian cherts. Scale in a
represents images in a and c-i; scale
in b represents image in b. All parts
show photomontages, which is
necessitated by the three-dimensional
preservation of the cylindrical sinuous
permineralized microbes. Squares in
each part indicate the areas for which
chemical data are presented in Figs 2
and 3. a, An unnamed cylindrical
prokaryotic filament, probably the
degraded cellular trichome or tubular
sheath of an oscillatoriacean
cyanobacterium, from the 770-Myr
Skillogalee Dolomite of South
Australia12. b, Gunflintia grandis, a
cellular probably oscillatoriacean
trichome, from the 2,100-Myr Gunflint
Formation of Ontario, Canada13. c, d,
Unnamed highly carbonized filamentous
prokaryotes from the 3,375-Myr Kromberg
Formation of South Africa14: the poorly
preserved cylindrical trichome of a
noncyanobacterial or oscillatoriacean
prokaryote (c); the disrupted,
originally cellular trichomic remnants
possibly of an Oscillatoria- or
Lyngbya-like cyanobacterium (d). e-i,
Cellular microbial filaments from the
3,465-Myr Apex chert of northwestern
Western Australia: Primaevifilum
amoenum4,5, from the collections of The
Natural History Museum (TNHM), London,
specimen V.63164[6] (e); P. amoenum4
(f); the holotype of P.
delicatulum4,5,15, TNHM V.63165[2] (g);
P. conicoterminatum5, TNHM V63164[9]
(h); the holotype of Eoleptonema apex5,
TNHM V.63729[1] (i).
source: Nature416
[2] Fig. 3 Filamentous microfossils:
a, cylindrical microfossil from
Hooggenoeg sample; b, threadlike and
tubular filaments extending between
laminae, Kromberg sample; c,d,e,
tubular filamnets oriented subparallel
to bedding, Kromberg sample; f,
threadlike filament flattened parallel
to bedding, Kromberg sample.
source: 73 - 76 (07 Mar 2002) Letters
to Nature
http://www.nature.com/nature/journal/v41
6/n6876/fig_tab/416073a_F1.html
2
evidence of moderate thermophile
sulphur reducing prokaryotes from North
Pole, Australia.1
FOOTNOTES
1. ^
http://www.nature.com/cgi-taf/DynaPage.t
af?file=/nature/journal/v410/n6824/full/
410077a0_fs.html
2. ^
http://www.nature.com/cgi-taf/DynaPage.t
af?file=/nature/journal/v410/n6824/full/
410077a0_fs.html
[1] get larger image
source: file:///root/web/fossils_biomark
er_science_v67_i22_nov_15_2003.html#bib9
9
2
bacteria.1
FOOTNOTES
1. ^
http://www.nature.com/nature/journal/v41
0/n6824/full/410077a0.html
2. ^
http://www.nature.com/nature/journal/v41
0/n6824/full/410077a0.html
[1] The tree is modified from ref. 2,
and abstracted from phylogenetic trees
presented in refs 26 and 27. The time
calibration points are from ref. 30,
with our additional constraint of 3.47
Gyr placed in the Bacterial domain.
Lineages housing sulphate-reducers
metabolizing at temperatures > 70 °C
are shown by broken black lines, while
lineages supporting sulphate-reducers
metabolizing at < 70 °C are shown by heavy black lines.
source: http://www.nature.com/nature/jou
rnal/v410/n6824/fig_tab/410077a0_F4.html
2
photosynthetic, probably anoxygenic,
bacteria that lived in mats in the
ocean date to this time.1
FOOTNOTES
1. ^
http://www.nature.com/nature/journal/v43
1/n7008/full/nature02888.html
2. ^
http://www.nature.com/nature/journal/v43
1/n7008/full/nature02888.html
[1] a, Dark carbonaceous laminations
draping an underlying coarse detrital
carbonaceous grain (a), showing
internal anastomosing and draping
character (b) and, at the top (c)
draping irregularities in underlying
carbonaceous laminations. b, Dark
carbonaceous laminations that have been
eroded and rolled up by currents. c,
Bundled filaments in the rolled
laminations in b [tp: they should
have clearly indicated that they are
saying that these filaments are
bacteria].
source: http://www.nature.com/nature/jou
rnal/v431/n7008/fig_tab/nature02888_F4.h
tml
1
Different from binary division, where a
cell is split in half, in budding, a
new complete cell is made in the
original cell, and the new cell bursts
through the cell wall, the original
cell wall must then be repaired.
FOOTNOTES
1. ^ Record ID 191. "Universe, life,
Science Future". Ted Huntington. (based
on my own estimate based on fossils
from id191) (3.4)
[1] Evolutionary relationships of model
organisms and bacteria that show
unusual reproductive strategies. This
phylogenetic tree (a) illustrates the
diversity of organisms that use the
alternative reproductive strategies
shown in (b). Bold type indicates
complete or ongoing genome projects.
Intracellular offspring are produced by
several low-GC Gram-positive bacteria
such as Metabacterium polyspora,
Epulopiscium spp. and the segmented
filamentous bacteria (SFB). Budding and
multiple fission are found in the
proteobacterial genera Hyphomonas and
Bdellovibrio, respectively. In the case
of the Cyanobacteria, Stanieria
produces baeocytes and Chamaesiphon
produces offspring by budding.
Actinoplanes produce dispersible
offspring by multiple fission of
filaments within the sporangium.
source: http://www.nature.com/nrmicro/jo
urnal/v3/n3/full/nrmicro1096_fs.html
(Nature Reviews Microbiology 3
[2] Electron micrograph of a
Pirellula bacterium from giant tiger
prawn tissue (Penaeus monodon). Notice
the large crateriform structures (C) on
the cell surface and flagella. From
Fuerst et al.
source: 214-224 (2005);
doi:10.1038/nrmicro1096)
South Africa are oldest evidence of
procaryotes that reproduce by budding
and not binary fission.1
FOOTNOTES
1. ^
http://www.sciencedirect.com/science?_ob
=ArticleURL&_udi=B6VBP-42G6M5T-7&_user=4
422&_coverDate=02%2F01%2F2001&_fmt=full&
_orig=browse&_cdi=5932&view=c&_acct=C000
059600&_version=1&_urlVersion=0&_userid=
4422&md5=d61bf36f008d6b2cba3ba5dbd5a628d
7&ref=full#bib9
MORE INFO
[1] (maybe
evidence): ZENTRALBLATT FUR
BAKTERIOLOGIE MIKROBIOLOGIE UND HYGIENE
I ABTEILUNG Pflug, H.D., 1982. Early
diversification of life in the Archean.
Zbl. Bakt. Hyg. I.Abt. Orig. C3, pp.
53-64.?
[1] Fig. 4. (a-d) Organic
microstructures from Swartkoppie chert,
South Africa (ca 3.25 Ga).
TEM-micrographs of demineralized
specimen (a,b) Laser mass spectra
(negative ions) from clusters of
similar specimens. Field of measurement
ca 1 small mu, Greekm diameter. (c,d)
TEM-micrographs from demineralized Thin
section. (e) Recent budding iron
bacterium Pedomicrobium sp. (Fig. e
from Ghiorse and Hirsch, 1979).
source: http://www.sciencedirect.com/sci
ence?_ob=MiamiCaptionURL&_method=retriev
e&_udi=B6VBP-42G6M5T-7&_image=fig6&_ba=6
&_user=4422&_coverDate=02%2F01%2F2001&_f
mt=full&_orig=browse&_cdi=5932&view=c&_a
cct=C000059600&_version=1&_urlVersion=0&
_userid=4422&md5=801178ddb930bd041063bae
7a3e0e204
found in 3235 million year old deep-sea
volcanogenic massive sulphide deposits
from the Pilbara Craton of Australia
may be oldest Archaea fossils.1
FOOTNOT
ES
1. ^ Nature 405, 676 - 679 (08 June
2000);
doi:10.1038/35015063 Filamentous
microfossils in a
3,235-million-year-old volcanogenic
massive sulphide deposit BIRGER
RASMUSSEN
[1] Photomicrographs of filaments from
the Sulphur Springs VMS deposit. Scale
bar, 10 µm. a-f, Straight, sinuous and
curved morphologies, some densely
intertwined. g, Filaments parallel to
the concentric layering. h, Filaments
oriented sub-perpendicular to
banding.
source:
4
G+C {Guanine and Cytosine count} Gram
positive) evolve.1 2 3
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Nature v417 n6886 (not
TOL)
3. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
4. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1]
http://en.wikipedia.org/wiki/Peptidoglyc
an
[2] firmicutes only bacteria to make
endospores
http://en.wikipedia.org/wiki/Endospore
[3]
http://en.wikipedia.org/wiki/Firmicutes
[1] Listeria monocytogenes is a
Gram-positive bacterium, in the
division Firmicutes, named for Joseph
Lister. It is motile by means of
flagella. Some studies suggest that 1
to 10% of humans may carry L.
monocytogenes in their
intestines. Researchers have found L.
monocytogenes in at least 37 mammalian
species, both domesticated and feral,
as well as in at least 17 species of
birds and possibly in some species of
fish and shellfish. Laboratories can
isolate L. monocytogenes from soil,
silage, and other environmental
sources. L. monocytogenes is quite
hardy and resists the deleterious
effects of freezing, drying, and heat
remarkably well for a bacterium that
does not form spores. Most L.
monocytogenes are pathogenic to some
degree.
source: http://en.wikipedia.org/wiki/Ima
ge:Listeria.jpg
[2] These are bacteria (about 0.3 µm
in diameter) that do not have outer
walls, only cytoplasmic membranes.
However, they do have cytoskeletal
elements that give them a distinct
non-spherical shape. They look like
schmoos that are pulled along by their
heads. How they are able to glide is a
mystery.
source: http://webmac.rowland.org/labs/b
acteria/projects_glide.html
5
ancestor of all Proteobacteria
(Rickettsia {mitochondria}, gonorrhoea,
Salmonella, E coli) evolving now.1 2 3
4
FOOTNOTES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
3. ^ Tree of life,
http://tolweb.org/tree/
4. ^ David moreira, Purificacion
Lopez-Garcia, "Symbiosis Between
methanogenic Archaea and
delta-Proteobacteria as the Origin of
Eukaryotes: The Synthreophic
Hypothesis", J Mol Evol (1998)
47:517-530. eukorig6_jmol.pdf
5. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1] multicellularity.
http://www.mansfield.ohio-state.edu/~sab
edon/biol3018.htm multicellularity.
Multicellularity.pdf
http://en.wikipedia.org/wiki/Escherichia
_coli
http://en.wikipedia.org/wiki/Proteobacte
ria
[1] Figure 1. Transmission electron
micrograph of the ELB agent in XTC-2
cells. The rickettsia are free in the
cytoplasm and surrounded by an electron
transparent halo. Original
magnification X 30,000. CDC PD
source: www.cdc.gov/ncidod/
eid/vol7no1/raoultG1.htm
[2] Caulobacter crescentus. From
http://sunflower.bio.indiana.edu/~ybrun/
L305.html COPYRIGHTED EDU was in wiki
but appears to be removed
source: http://upload.wikimedia.org/wiki
pedia/en/4/42/Caulobacter.jpg
2
Eubacteria Phylum, Planctomycetes
(Planctobacteria) evolving now.1
FOOTNO
TES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1] s10
http://ijs.sgmjournals.org/cgi/reprint/5
0/6/1965
[2]
http://genomebiology.com/2002/3/6/resear
ch/0031
[3]
http://en.wikipedia.org/wiki/Planctomyce
tes
[1] Electron micrographs of cells of
new Gemmata-like and Isosphaera-like
isolates. (A) Negatively stained cell
of the Gemmata-like strain JW11-2f5
showing crateriform structures
(arrowhead) and coccoid cell
morphology. Bar marker, 200 nm. (B)
Negatively stained budding cell of
Isosphaera-like strain CJuql1 showing
uniform crateriform structures
(arrowhead) on the mother cell and
coccoid cell morphology. Bar marker,
200 nm. (C) Thin section of
Gemmata-like cryosubstituted cell of
strain JW3-8s0 showing the
double-membrane-bounded nuclear body
(NB) and nucleoid (N) enclosed within
it. Bar marker, 200 nm. (D) Thin
section of Isosphaera-like strain C2-3
possessing a fibrillar nucleoid (N)
within a cytoplasmic compartment
bounded by a single membrane (M) only.
Bar marker, 200 nm. Appl Environ
Microbiol. 2002 January; 68(1):
417-422. doi:
10.1128/AEM.68.1.417-422.2002.
source: http://www.pubmedcentral.gov/art
iclerender.fcgi?tool=pubmed&pubmedid=117
72655
[2] Evolutionary distance tree
derived from comparative analysis of
16S rDNAs from freshwater and soil
isolates and reference strains of the
order Planctomycetales. Database
accession numbers are shown in
parentheses after species, strain, or
clone names. Bootstrap values of
greater than 70% from 100 bootstrap
resamplings from the distance analysis
are presented at nodes. Thermotoga
maritima was used as an outgroup.
Isolates from this study and
representative named species of the
planctomycetes are indicated in bold.
The scale bar represents 0.1 nucleotide
substitution per nucleotide
position. Appl Environ Microbiol.
2002 January; 68(1): 417-422. doi:
10.1128/AEM.68.1.417-422.2002.
source: http://florey.biosci.uq.edu.au/m
ypa/images/fuerst2.gif
6
Eubacteria Phylum, Actinobacteria (high
G+C, Gram positive) evolving now.1 2 3
4 5
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Nature v417 n6886, not
TOL
3. ^ "Actinobacteria". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Actinobacte
ria
4. ^
http://asylumeclectica.com/malady/archiv
es/leprosy.htm
5. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
6. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
[1] Frankia is a genus of
nitrogen-fixing soil bacteria, which
possesses a set of features that are
unique amongst symbiotic
nitrogen-fixing microorganisms,
including rhizobia, making it an
attractive taxon to study. These
heterotrophic Gram-positive bacteria
which are able to induce symbiotic
nitrogen-fixing root nodules
(actinorhizas) in a wide range of
dicotyledonous species (actinorhizal
plants), have also the capacity to fix
atmospheric nitrogen in culture and
under aerobic conditions.
source: http://www.ibmc.up.pt/webpagesgr
upos/cam/Frankia.htm
[2] Aerial mycelium and spore of
Streptomyces coelicolor. The mycelium
and the oval spores are about 1µm
wide, typical for bacteria and much
smaller than fungal hyphae and spores.
(Scanning electron micrograph, Mark
Buttner, Kim Findlay, John Innes
Centre). COPYRIGHT UK
source: http://www.sanger.ac.uk/Projects
/S_coelicolor/micro_image4.shtml
2
Eubacteria Phylum, Spirochaetes
(Syphilis, Lyme disease) evolving now.1
FOOTNOTES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ estimated from
Battistuzzi, Feijao, Hedges, "A Genomic
timescale of prokaryote evolution:
insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
MORE INFO
[1] Tree of Life.
http://tolweb.org/tree/
[2] Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
[1] Syphilis is a complex, sexually
transmitted disease (STD) with a highly
variable clinical course. The disease
is caused by the bacterium, Treponema
pallidum. In the United States, 32,871
cases of syphilis, including 432 cases
of congenital syphilis, were detected
by public health officials in 2002.
Eight of the ten states with the
highest rates of syphilis are located
in the southern region of the United
States.
source: http://www.cdc.gov/nchstp/od/tus
kegee/syphilis.htm
[2] leptospirose 200x magnified with
dark-field microscope photo taken by
bluuurgh at the dutch royal tropical
institute (www.kit.nl) PD
source: http://uhavax.hartford.edu/bugl/
images/Treponema%20pallidum.jpg
3 4
Eubacteria Phyla Bacteroidetes and
Chlorobi (green sulphur bacteria)
evolving now.1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).. ^
3. ^ estimate from Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
4. ^ estimate from Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1] Tree of Life
[2]
http://en.wikipedia.org/wiki/Bacteroidet
es
[3]
http://en.wikipedia.org/wiki/Chlorobi
[1] Bacteroides fragilis . From the
Zdravotni University
source: http://biology.kenyon.edu/Microb
ial_Biorealm/bacteria/bacteroidete_chlor
ob_group/bacteroides/bacteroides.htm
[2] Cross section of a Bacteroides
showing an outer membrane, a
peptidoglycan layer, and a cytoplasmic
membrane. From New-asthma
source: http://phil.cdc.gov/phil/details
.asp
2
Eubacteria Phyla Chlamydiae and
Verrucomicrobia evolving now.1
FOOTNOTE
S
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1] Tree of Life.
http://tolweb.org/tree/
[2] Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
[3]
http://en.wikipedia.org/wiki/Chlamydiae
[4]
http://en.wikipedia.org/wiki/Verrucomicr
obia
[1] Chlamydia trachomatis wiki, is
copyrighted
source: http://en.wikipedia.org/wiki/Chl
amydia_trachomatis
[2] wiki, public domain
source: http://en.wikipedia.org/wiki/Ima
ge:Chlamydophila_pneumoniae.jpg
1
cell membrane folds around some
molecules to form a spherical vesicle
which enters the cytoplasm, and
exocytosis, the opposite process, where
a vesicle combines with a call membrane
to empty molecules outside a cell both
evolve in an early eukaryote cell.
Eukaryote cells can now swallow
bacteria (phagocytosis) and liquid
(pinocytosis). The cells can then
(heterotrophically) use the molecules
injested (for example a bacterium) for
copying and to make ATP. This is the
first time one cell can eat a different
living cell.
FOOTNOTES
1. ^ guess based on Cav-Smith saving
endo before cytoskeleton
[1] Pinocytosis In the process of
pinocytosis the plasma membrane froms
an invagination. What ever substance
is found within the area of
invagination is brought into the
cell. In general this material will
be dissolved in water and thus this
process is also refered to as
''cellular drinking'' to indicate that
liquids and material dissolved in
liquids are ingested by the
cell. This is opposed to the
ingestion of large particulate material
like bacteria or other cells or cell
debris.
source: http://academic.brooklyn.cuny.ed
u/biology/bio4fv/page/endocytb.htm
4
cytoplasm.1 2 3
FOOTNOTES
1. ^ Cavalier-Smith, annals of Botony
2005 vol95 issue 1
2. ^ Margulis, L.
1998. Symbiotic Planet: A New Look at
Evolution. Science Masters: Brockman
Inc, New York. Margulis, L., Dolan,
M., Guerrero, R. 2000. The Chimaeric
eukaryote: Origin of the nucleus from
the karyomastigont in amitochondriate
protists. Colloquium. 97: 6954-6959.
3. ^
Symbiosis in cell evolution : microbial
communities in the Archean and
Proterozoic eons / Lynn Margulis. 1993
second edition
4. ^ guess based on ER and golgi
made of same materia as cytoskeleton
11
4 5 6 7 8 9 10 This cell has a
nucleus, with either single strands or
a circle of DNA inside. This is a
single anaerobic cell. This is the
first protist.
This cell evolves either by:
1) two or more
bacteria joined, one with flagella
(perhaps a eubacteria) formed the
nucleus, a second formed the cytoplasm
outside the nucleus, eventually the
code to build the entire cell including
the instructions to build the symbiotic
captured bacteria was included in the
new nucleus,
2) the nucleus formed as
part of the cytoplasm lattice, perhaps
the outer wall folded in on itself
creating a double membrane, or a
membrane grew around the DNA (for
example like planctobacteria) which
provided more protection for the DNA
from the movement and digestive
activities of cytoplasm now without a
rigid cell wall,
3) a bacteria with
flagella that grew cytoplasm and a
secondary cell wall outside the
original cell wall,
4) a virus,
5) a
DNA strand from conjugation with a
different prokaryote stored in a
vesicle.
There are key features that are
different from eukaryotes and
prokaryotes:
1) Eukaryotes have a nucleus,
prokaryotes do not.
2) DNA in eukaryotes is
in the form of chromosomes, in
prokaryotes the DNA is in a circle.
3)
Eukaryotes can do endocytosis, fold
their cell membrane around some
external object and injest the object,
prokaryotes can not.
4) Eukaryotes have a
membrane lattice of proteins, actin and
myacin, prokaryotes do not.
5) Eukaryotes
have an endoplasmic reticulum and golgi
body.
6) Eukaryotes reproduce asexually by
dual binary division (both nucleus and
cell divide by binary division),
budding, or mitosis, prokaryotes
reproduce by budding or binary
division.
If the nucleus is an engulfed
prokaryote, this cell inherits the
processes of nuclear DNA duplication
and nucleus division (karyokinesis)
from prokaryote binary division.
Initially, both the nucleus and cell
divide by binary division.
FOOTNOTES
1. ^ Nature 396, 109 - 110 (12
November 1998);
doi:10.1038/24030 Rickettsia, typhus
and the mitochondrial
connection MICHAEL W. GRAY
2. ^ Richard
Cowen, "History of Life", (Malden, MA:
Blackwell, 2005).
3. ^ Nature 392, 15 - 16 (05
March 1998); doi:10.1038/32033 A
paradigm gets shifty W. FORD
DOOLITTLE
4. ^ (h2 symbiosis) The chimeric
eukaryote: Origin of the nucleus from
the karyomastigont in amitochondriate
protists Lynn Margulis*, Michael F.
Dolan* , and Ricardo
Guerrero file:/root/web/euk_nucleo6954.
5. ^ "Planctomycetes a phylum of
emerging interest for microbial
evolution and ecology John A.
Fuerst" planctomycetes_a1.pdf and
fuerst1.pdf
6. ^ Nature 392, 37 - 41 (05 March
1998); doi:10.1038/32096 The hydrogen
hypothesis for the first
eukaryote WILLIAM MARTIN* AND MIKLÓS
MÜLLER
7. ^ Nature 431, 152 - 155 (09
September 2004);
doi:10.1038/nature02848 The ring of
life provides evidence for a genome
fusion origin of eukaryotes MARIA C.
RIVERA1,3,4 AND JAMES A. LAKE1,2,4
8. ^ Science,
Vol 305, Issue 5685, 766-768 , 6 August
2004 EVOLUTIONARY BIOLOGY: The Birth
of the Nucleus Elizabeth Pennisi
9. ^ Richard
Cowen, "History of Life", (Malden, MA:
Blackwell, 2005).0) origin of nuclear
membrane/envelope, is anaerobic
eukorig1 thru eukorig7
10. ^ S Blair Hedges,
Hsiong Chen, Sudhir Kumar, Daniel YC
Wang, Amanda S Thompson and Hidemi Wa,
"A genomic timescale for the origin of
eukaryotes", BMC Evolutionary Biology
2001, 1:4
doi:10.1186/1471-2148-1-4, (2001).
11. ^ S
Blair Hedges, Hsiong Chen, Sudhir
Kumar, Daniel YC Wang, Amanda S
Thompson and Hidemi Wa, "A genomic
timescale for the origin of
eukaryotes", BMC Evolutionary Biology
2001, 1:4
doi:10.1186/1471-2148-1-4, (2001).
[1]
http://www.regx.de/m_organisms.php#planc
to
source: http://www.regx.de/m_organisms.p
hp#plancto
[2]
http://www.mansfield.ohio-state.edu/~sab
edon/biol1080.htm
source: http://www.mansfield.ohio-state.
edu/~sabedon/biol1080.htm
5
single circular chromosome to linear
chromosomes.1 2 3 4
Possibly the prokaryote ancestor of the
first eukaryote had linear chromosomes
since some prokaryotes (although very
few) are known to have linear
chromosomes instead of or in addition
to a single circular chromosome.
FOOTNOTES
1. ^ not all prokaryotes has circle of
DNA: http://arjournals.annualreviews.or
g/doi/full/10.1146/annurev.ecolsys.28.1.
391;jsessionid=npo4ogeI2anbnHbeKO
2. ^ Jumas-Bilak E, Maugard C,
Michaux-Charachon S, Allardet-Servent
A, Perrin A, et al. 1995. Study of the
organization of the genomes of
Escherichia coli, Brucella melitensis
and Agrobacterium tumefaciens by
insertion of a unique restriction site.
Microbiology 141:2425-32 (Medline)
3. ^ Lezhava
A, Kameoka D, Sugino H, Goshi K,
Shinkawa H, et al. 1997. Chromosomal
deletions in Streptomyces griseus that
remove the afsA locus. Mol. Gen. Genet.
253:478-83
4. ^ Marconi RT, Casjens S, Munderloh
UG, Samuels DS. 1996. Analysis of
linear plasmid dimers in Borrelia
burgdorferi sensu lato isolates:
implications concerning the potential
mechanisms of linear plasmid
replication. J. Bact. 178:3357-61
5. ^ Ted
Huntington, my guess due to absence of
published info
undulipodium) evolves on early single
cell eukaryotes.
constantly synthesizing DNA and then
having a division period (as is the
case for all known prokaryotes), but
this cell has a period in between cell
division and DNA synthesis where DNA
synthesis is not performed. Later some
cells develop a stage after synthesis
and before cell division.1
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).: p45
3
a prokaryote, synchronized duplication
and division of organelle-nucleus and
cytoplasm of early eukaryote cell
evolves. Before this, eukaryote cell
division usually results in one cell
with no organelle-nuclei and a second
cell with 2 organelle-nuclei. Perhaps
the organelle-nuclei attach to the
outer cell membrane in the same way the
cytoplasmic DNA do, which allows new
cytoplasm growth to separate the two
organelle-nucleus in addition to the
cytoplasmic DNA.1 2
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).
2. ^ based loosely on S
Blair Hedges, Hsiong Chen, Sudhir
Kumar, Daniel YC Wang, Amanda S
Thompson and Hidemi Wa, "A genomic
timescale for the origin of
eukaryotes", BMC Evolutionary Biology
2001, 1:4
doi:10.1186/1471-2148-1-4, (2001).
3. ^ based
loosely on S Blair Hedges, Hsiong Chen,
Sudhir Kumar, Daniel YC Wang, Amanda S
Thompson and Hidemi Wa, "A genomic
timescale for the origin of
eukaryotes", BMC Evolutionary Biology
2001, 1:4
doi:10.1186/1471-2148-1-4, (2001).
source:
source:
haploid (single set of chomosomes)
eukaryote nucleus, evolves in
eukaryotes. Before mitosis, there is a
synthesis stage where DNA in the form
of chromosomes are duplicated in the
nucleus before the nucleus and cell
divide.1 2
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).: types of
mitosis, evolution of mitosis.
2. ^
BruscaCh05.pdf pleuromitosis,
orthomitosis
[1] Mitosis divides genetic information
during cell division Source:
http://www.ncbi.nlm.nih.gov/About/primer
/genetics_cell.html This image is
from the Science Primer, a work of the
National Center for Biotechnology
Information, part of the National
Institutes of Health. As a work of the
U.S. federal government, the image is
in the public domain.
source: http://en.wikipedia.org/wiki/Mit
osis
[2] Prophase: The two round objects
above the nucleus are the centrosomes.
Note the condensed chromatin. from
Gray's Anatomy. Unless stated
otherwise, it is from the online
edition of the 20th U.S. edition of
Gray's Anatomy of the Human Body,
originally published in 1918. Online
editions can be found on Bartleby and
also on Yahoo!
source:
5 6
syngamy, gametogamy) evolves in
protists. Haploid (1 set of
chromosomes) eukaryote cells merge and
then their nuclei merge (karyogamy) to
form the first diploid (2 sets of
chromosomes) cells (the first zygote).1
2
This fusion of 2 haploid cells results
in the first diploid single-celled
organism, which then immediately
divides (both nucleus and cytoplasm by
single-division meiosis) back to two
haploid cells.
Possibly first, only cytoplasmic
merging happened with nuclear merging
(karyogamy) and nuclear division
(karyokinesis) evolving later.
Now, two cells
with different DNA can mix providing
more chance of variety/mutation. Two
chromosome sets provides a backup copy
of important genes (sequences that code
for proteins, or nucleic acids) that
might be lost with only a set of single
chromosomes.
The life cycle of future organisms will
now have two phases, a gamophase (from
n to 2n (until syngamy3 )), and
zygophase (from 2n to n (until meiosis4
)). Gamoid cells are not haploid in
polyploid organisms.
FOOTNOTES
1. ^ Sir Gavin De Beer, "Atlas of
Evolution", (London: Nelson, 1964).
2. ^
Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
3. ^ Ted
Huntington.
4. ^ Ted Huntington.
5. ^ J. William Schopf, "Major
Events in the History of Life",
(Boston, MA: Jones and Bartlett
Publishers, 1992).p57 (was)
6. ^ estimate
based on diplomonads having sex repro,
and origin of euk being (is now)
[1] Zygotic Meiosis. GNU
source: http://en.wikipedia.org/wiki/Ima
ge:Zygotic_meiosis.png
[2] Gametic Meiosis. GNU
source: http://en.wikipedia.org/wiki/Ima
ge:Gametic_meiosis.png
duplication and a cell division of a
diploid cell into 2 haploid cells)
evolves.1 2
FOOTNOTES
1. ^
http://www.zoology.ubc.ca/~redfield/rese
arch/clevelan.html
2. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989)., no cross over in
one-division
[1] GametoGenesis. COPYRIGHTED EDU
source: http://www.bio.miami.edu/dana/10
4/gametogenesis.jpg
[2] Sexual cycle oxymonas, identical
to saccinobaculus, one step meiosis.
haploid. COPYRIGHTED CANADA
source: http://www.zoology.ubc.ca/~redfi
eld/clevelan/oxymonas.GIF
2 haploid cells fuse) evolves.
This begins the "diplontic" life cycle
(with gametic meiosis), where diploid
cells (a zygote) can copy asexually
through mitosis after merging. This
organism, when haploid, cannot do
mitosis (presumably haploid gamete
mitosis will evolve much later in brown
algae), and this is still true in all
descendents (including humans) of this
single celled organism.
(cell and nucleus fusion) between two
isogamous (same size) gametes but which
have 2 different (+ and -) forms
(genders).1
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).
between two different size gamete cells
(heterogamy or anisogamy) evolves in
protists.1
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).
sterols, molecules made by mitochondria
in eukaryotes) found in northwestern
Australia.1 2
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^ Science,
Vol 285, Issue 5430, 1033-1036 , 13
August 1999 Archean Molecular Fossils
and the Early Rise of
Eukaryotes Jochen J. Brocks, 1,2*
Graham A. Logan, 2 Roger Buick, 1 Roger
E. Summons 2
evolves.1 2 3 4
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989). p76,p79
2. ^
http://www.zoology.ubc.ca/~redfield/clev
elan.html
3. ^
arjournals.annualreviews.org/doi/pdf/10.
1146/annurev.mi.17.100163.002105
diatoms do gamontogamy
gamontogomy_diatoms_annurev.mi.17.100163
.002105.pdf
4. ^
http://arjournals.annualreviews.org/doi/
abs/10.1146%2Fannurev.ecolsys.28.1.391
annurev.ecolsys.28.1.391 (saved html
file)
[1] The Oxymonad, Notila (diploid
Pacific form) life cycle. COPYRIGHTED
source: http://www.zoology.ubc.ca/~redfi
eld/clevelan/notila.GIF
cell divisions with no stage in between
which result in one diplid cell
dividing into four haploid cells)
evolves.1
FOOTNOTES
1. ^
http://www.zoology.ubc.ca/~redfield/rese
arch/clevelan.html
[1] GametoGenesis. COPYRIGHTED EDU
source: http://www.bio.miami.edu/dana/10
4/gametogenesis.jpg
[2] Sexual cycle oxymonas, identical
to saccinobaculus, one step meiosis.
haploid. COPYRIGHTED CANADA
source: http://www.zoology.ubc.ca/~redfi
eld/clevelan/oxymonas.GIF
2
FOOT
NOTES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004). (2600-2700my)
2
(Thermus Aquaticus {used in PCR},
Deinococcus radiodurans {can survive
long exposure to radiation}) evolve
now.1
FOOTNOTES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1] Tree of Life.
http://tolweb.org/tree/
[2] Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
[1] D. radiodurans growing on a
nutrient agar plate. The red color is
due to carotenoid pigment. Links to
816x711-pixel, 351KB JPG. Credit: M.
Daly, Uniformed Services University of
the Health Sciences NASA
source: http://science.nasa.gov/newhome/
headlines/images/conan/D_rad_dish.jpg
[2] Photomicrograph of Deinococcus
radiodurans, from
www.ornl.gov/ORNLReview/ v34 The Oak
Ridge National Laboratory United
States Federal Government This work
is in the public domain because it is a
work of the United States Federal
Government. This applies worldwide. See
Copyright.
source: http://en.wikipedia.org/wiki/Ima
ge:Deinococcus.jpg
3 4
Eubacteria phylum, Cyanobacteria
(ancestor of all eukaryote chloroplasts
{plastids}) evolving now. There is a
conflict between the interpretation of
the geological and the genetic evidence
as to if oxygen photosynthesis and
cyanobacteria evolved earlier around
3800mybn or here at 2500mybn.1 2
FOOTNO
TES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ S. Blair Hedges and
Sudhir Kumar, "Genomic clocks and
evolutionary timescales", Trends in
Genetics Volume 19, Issue 4 , April
2003, Pages 200-206, (2003).
3. ^ Battistuzzi,
Feijao, Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
4. ^ S. Blair Hedges and Sudhir Kumar,
"Genomic clocks and evolutionary
timescales", Trends in Genetics
Volume 19, Issue 4 , April 2003, Pages
200-206, (2003).
MORE INFO
[1] Tree of Life.
http://tolweb.org/tree/
[2] Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
[3] Journal of Molecular
Evolution Publisher: Springer-Verlag
New York ISSN: 0022-2844 (Paper)
1432-1432 (Online) Issue: Volume 42,
Number 2 Date: February 1996 Pages:
194 - 200
[4] Phylogenetic Relationships of
Nonaxenic Filamentous Cyanobacterial
Strains Based on 16S rRNA Sequence
Analysis jme_42_2_1996.pdf
[5]
http://en.wikipedia.org/wiki/Cyanobacter
ia
[1] Oscillatoria COPYRIGHTED EDU
source: http://www.stcsc.edu/ecology/alg
ae/oscillatoria.jpg
[2] Lyngbya COPYRIGHTED EDU
source: http://www.stanford.edu/~bohanna
n/Media/LYNGB5.jpg
2
Non-Sulphur) evolve now.1
FOOTNOTES
1. ^ Battistuzzi, Feijao, Hedges, "A
Genomic timescale of prokaryote
evolution: insights into the origin of
methanogenesis, phototrophy, and the
colonization of land", BMC Evolutionary
Biology, (2004).
2. ^ Battistuzzi, Feijao,
Hedges, "A Genomic timescale of
prokaryote evolution: insights into
the origin of methanogenesis,
phototrophy, and the colonization of
land", BMC Evolutionary Biology,
(2004).
MORE INFO
[1] Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
[2] Tree of Life
http://tolweb.org/tree/
[1] Chloroflexus photomicrograph from
Doe Joint Genome Institute of US Dept
Energy PD
source: http://en.wikipedia.org/wiki/Ima
ge:Chlorofl.jpg
Era.1 2
FOOTNOTES
1. ^ The geological Society of America
ucmp.berkeley.edu
2. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
appear in many places.1 2
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^
greenspirit.uk
million years starts now.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2
nucleus that makes ribosomes, evolves.1
FOOTNOTES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).: p48 nucleolus
divides
2. ^ Ted Huntington guess
[1] Nucleolus, COPYRIGHTED
source: http://www.eccentrix.com/members
/chempics/Slike/cell/Nucleolus.jpg
[2] With the combination of x-rays
from the Advanced Light Source and a
new protein-labeling technique,
scientists can see the distribution of
the nucleoli within the nucleus of a
mammary epithelial cell. USG PD
source: http://www.lbl.gov/Science-Artic
les/Archive/xray-inside-cells.html
reticulum evolves in eukaryote cell.
[1] Figure 1 : Image of nucleus,
endoplasmic reticulum and Golgi
apparatus. (1) Nucleus. (2) Nuclear
pore. (3) Rough endoplasmic reticulum
(RER). (4) Smooth endoplasmic reticulum
(SER). (5) Ribosome on the rough ER.
(6) Proteins that are transported. (7)
Transport vesicle. (8) Golgi apparatus.
(9) Cis face of the Golgi apparatus.
(10) Trans face of the Golgi apparatus.
(11) Cisternae of the Golgi
apparatus. I am the copyright holder
of that image (I might even have the
CorelDraw file around somewhere:-), and
I hereby place the image and all
partial images created from it in the
public domain. So, you are free to use
it any way you like. In fact, I am
delighted that one of my drawings makes
it into print! I can mail you the
.cdr file, if you like (and if I can
find it), if you need a better
resolution for printing. Yours, Magnus
Manske Source: [1]. See also
User:Magnus Manske
source: http://en.wikipedia.org/wiki/Ima
ge:Nucleus_ER_golgi.jpg
dictyosome) evolves in eukaryote cell.
[1] Figure 1: Image of nucleus,
endoplasmic reticulum and Golgi
apparatus: (1) Nucleus, (2) Nuclear
pore, (3) Rough endoplasmic reticulum
(RER), (4) Smooth endoplasmic reticulum
(SER), (5) Ribosome on the rough ER,
(6) Proteins that are transported, (7)
Transport vesicle, (8) Golgi apparatus,
(9) Cis face of the Golgi apparatus,
(10) Trans face of the Golgi apparatus,
(11) Cisternae of the Golgi apparatus,
(12) Secretory vesicle, (13) Plasma
membrane, (14) Exocytosis, (15)
Cytoplasm, (16) Extracellular space.
source: http://en.wikipedia.org/wiki/Ima
ge:Nucleus_ER_golgi_ex.jpg
makes lysosomes which fuse with
endosomes. The various molecules in
lysosomes digest the contents of the
endosome, which then exits the cell as
waste.
[1] Figure 1: Image of nucleus,
endoplasmic reticulum and Golgi
apparatus: (1) Nucleus, (2) Nuclear
pore, (3) Rough endoplasmic reticulum
(RER), (4) Smooth endoplasmic reticulum
(SER), (5) Ribosome on the rough ER,
(6) Proteins that are transported, (7)
Transport vesicle, (8) Golgi apparatus,
(9) Cis face of the Golgi apparatus,
(10) Trans face of the Golgi apparatus,
(11) Cisternae of the Golgi apparatus,
(12) Secretory vesicle, (13) Plasma
membrane, (14) Exocytosis, (15)
Cytoplasm, (16) Extracellular space.
source: http://sun.menloschool.org/~cwea
ver/cells/e/lysosomes/
source: http://en.wikipedia.org/wiki/Ima
ge:Nucleus_ER_golgi_ex.jpg
that can only live in other bacteria,
closely related to Rickettsia
prowazekii, an aerobic
alpha-proteobacteria that causes
louse-borne typhus, enters an early
eukaryote cell. As time continues a
symbiotic relationship evolves, where
the Rickettsia forms the mitochondria,
organelles of every euokaryote cell.
The mitochondria perform the Acid
Citric Cycle (Krebs Cycle), using
oxygen to breakdown glucose into CO2
and H2O, and provide up 38 ATP
molecules. Mitochondria reproduce by
themselves, and are not created by the
DNA in the cell nucleus. As time
continues some of the DNA from the
mitochondria merges with the cell
nucleus DNA. Mitochondria produce
sterol used to make the eukaryote cell
wall flexible. Because mitochondria
need Oxygen, but the level of oxygen is
very low on earth, oxygen may be
provided by photosynthesizing
cyanobacteria living near these cells.
All eukaryotes alive today either have
mitochondria except the amitochondriate
excavates (metamonads), the most
ancient of the eukaryotes alive today.
That parabasalids have hydrogenosomes,
anaerobic organelles that seem to have
evolved from mitochondria, many people
think amitochondriate species lost
their mitochondria over time.1
FOOTNOTES
1. ^
http://comenius.susqu.edu/BI/202/Protist
s/EUKARYA-DOMAIN.htm
[1] Phylogenetic hypothesis of the
eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas.
source: http://nar.oxfordjournals.org/co
ntent/vol26/issue4/images/gkb18201.gif
[2] Figure 1 Phylogenetic tree of
eukaryotes based on ultrastructural and
molecular data. Organisms are
sub-divided into main groups as
discussed in the text. Only a few
representative species for which
complete (or almost complete) mtDNA
sequences are known are shown in each
lineage. In some cases, line drawings
or actual pictures of the organisms are
provided (Acanthamoeba, M. Nagata; URL:
http://protist.i.hosei.ac.jp/PDB/PCD3379
/htmls/21.html; Allomyces, Tom Volk;
URL:
http://botit.botany.wisc.edu/images/332/
Chytridiomycota/Allomyces_r_So_pa/A._arb
uscula_pit._sporangia_tjv.html;
Amoebidium, URL:
http://cgdc3.igmors.upsud.fr/microbiolog
ie/mesomycetozoaires.htm; Marchantia,
URL:
http://www.science.siu.edu/landplants/He
patophyta/images/March.female.JPEG
Scenedesmus, Entwisle et al.,
http://www.rbgsyd.gov.au/_data/page/1824
/Scenedesmus.gif). The color-coding of
the main groups (alternating between
dark and light blue) on the outer
circle corresponds to the color-coding
of the species names. Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
molecular data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional sequence data. [t:
why not color code or add which type of
mito?]
source: http://arjournals.annualreviews.
org/doi/full/10.1146/annurev.genet.37.11
0801.142526
4
Unikonts (one cilium). Bikonts (also
called anterokonts for having anterior
{forward facing} cilia) will evolve
into the vast majority of the Protist
and all of the Plant Kingdoms. The
Unikonts will evolve into the ameobozoa
(tenatively), and the opisthokonts
(ancestrally posterior cilium) which
include the entire Fungi and Animal
Kingdoms.1 2 3
FOOTNOTES
1. ^ Nucleic Acids Research Pages
865-878 v26 4 865 MW Gray, BF Lang,
R Cedergren, GB Golding, C Lemieux, D
Sankoff, M Turmel, N Brossard, E
Delage, TG Littlejohn, I Plante, P
Rioux, D Saint-Louis, Y Zhu, and G
Burger
2. ^ Genome structure and gene
content in protist mitochondrial DNAs
J Mol Evol (2003) 56:540 563, 2003
56:540-563 Cavalier-Smith Journal of
Molecular Evolution Phylogeny of
Choanozoa, Apusozoa, and Other Protozoa
and Early Eukaryote Megaevolution
Thomas Cavalier-Smith, Ema E.-Y. Chao
3. ^
Cav-Smith science vol297 issue 5578
07-05-2002
4. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
MORE INFO
[1] THOMAS CAVALIER-SMITH,
"Economy, Speed and Size Matter:
Evolutionary Forces Driving Nuclear
Genome Miniaturization and Expansion",
* Oxford Journals * Life
Sciences * Annals of Botany *
Volume 95, Number 1 *, (2005).
[2] Thomas
Cavalier-Smith and Ema E. -Y. Chao,
"Phylogeny of Choanozoa, Apusozoa, and
Other Protozoa and Early Eukaryote
Megaevolution", Springer New York,
(2003).
[3] Michael W. Gray, B. Franz Lang,
Robert Cedergren, G. Brian Golding,
Claude Lemieux, David San, "Genome
structure and gene content in protist
mitochondrial DNAs", Oxford Journals,
(1997).
[1] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas.
source:
a mineral that cannot exist for much
time if exposed to oxygen, indicating
that free oxygen is accumulating in the
air of earth for the first time.1
FOOTN
OTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
on land, begin here and are evidence of
more free oxygen in the air of earth.1
2
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^
http://www.es.ucsc.edu/~pkoch/lectures/l
ecture5.html
[1]
http://www.kgs.ukans.edu/Extension/redhi
lls/redhills.html
source:
4 5 6
oldest line of eukaryotes still in
existence, the oldest living protists,
in the Phylum "Metamonada" (Excavates)
originating now. 1 2 3 This is where
the eukaryote line is created and
separates from the archaebacteria
(archaea) line. Most of these species
have an excavated ventral feeding
groove, and all lack mitochondria.
Mitochondria are thought to have been
lost secondarily, although this is not
certain.
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004).
5. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
6. ^ S. Blair Hedges, "The
Origin and Evolution of Model
Organisms", Nature Reviews Genetics 3,
838-849; doi:10.1038/nrg929, (2002).
[1] Giardia lamblia, a parasitic
flagellate that causes giardiasis.
Image from public domain source at
http://www.nigms.nih.gov/news/releases/i
mages/para.jpg
source: http://www.nigms.nih.gov/news/re
leases/images/para.jpg
[2] . The cysts are hardy and can
survive several months in cold water.
Infection occurs by the ingestion of
cysts in contaminated water, food, or
by the fecal-oral route (hands or
fomites) . In the small intestine,
excystation releases trophozoites (each
cyst produces two trophozoites) .
Trophozoites multiply by longitudinal
binary fission, remaining in the lumen
of the proximal small bowel where they
can be free or attached to the mucosa
by a ventral sucking disk .
Encystation occurs as the parasites
transit toward the colon. The cyst is
the stage found most commonly in
nondiarrheal feces . Because the cysts
are infectious when passed in the stool
or shortly afterward, person-to-person
transmission is possible. While
animals are infected with Giardia,
their importance as a reservoir is
unclear.
source: http://www.dpd.cdc.gov/dpdx/HTML
/Giardiasis.asp?body=Frames/G-L/Giardias
is/body_Giardiasis_page1.htm
7 8 9 10
Eukaryote Phylum "Loukozoa" (Jakobea
and Malawimonadea) originating now.
These species have mitochondria with
tubular cristae, and are the most
ancient species that still have
mitochondria.1 2 3 4
This species is the most ancient known
species to have a shell. This first
hard shells (lorika) made of calcium
carbonate (Calcite CaCO3), plates of
silica (SiO2), or carbon-based
molecules evolve around the
single-celled species living in the
ocean. 5
Perhaps this shell served to protect
the cell from external damage from
being eaten by other eukaryotes
(zooplankton), infection by bacteria or
viruses, control of buoyancy, to filter
UV light, against damage by non-living
sources. 6
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
4. ^ S. L. Baldauf,
"The Deep Roots of Eukaryotes", Science
13 June 2003: Vol. 300. no. 5626, pp.
1703 - 1706 DOI:
10.1126/science.1085544, (2003).
5. ^
http://www.iscid.org/encyclopedia/Lorica
6. ^ "Coccolith". Wikipedia. Wikipedia,
2008.
http://en.wikipedia.org/wiki/Coccolith
7. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
8. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
9. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
10. ^ estimate from
S. L. Baldauf, "The Deep Roots of
Eukaryotes", Science 13 June
2003: Vol. 300. no. 5626, pp. 1703 -
1706 DOI: 10.1126/science.1085544,
(2003).
[1] Histiona. This drawing was made by
D. J. Patterson. COPYRIGHTED EDU
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
3479
[2] Histiona (hist-ee-own-a) is a
jakobid flagellate related to Jakoba.
As with other excavates, there is a
ventral groove and the flagella insert
at the head of the groove. There are
two flagella, one lying in the groove
and one curving outwards from the point
of insertion. The margins of the groove
can be mistaken for flagella. Unlike
most other excavates, Histiona sits in
a stalked lorica when feeding. Lorica
with a cyst is evident. Phase contrast.
This picture was taken by David
Patterson, Linda Amaral Zettler, Mike
Peglar and Tom Nerad from cultures and
other materials maintained at the
American Type Culture Collection during
2001. COPYRIGHTED EDU
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
435
mitochondria split from the tubular
christae line.1
This is the origin of the
Discicristata: species that have
discoid mitochondrial cristae and, in
some cases, a deep (excavated) ventral
feeding groove.2
FOOTNOTES
1. ^ Nucleic Acids Research Pages
865-878 v26 4 865 MW Gray, BF Lang,
R Cedergren, GB Golding, C Lemieux, D
Sankoff, M Turmel, N Brossard, E
Delage, TG Littlejohn, I Plante, P
Rioux, D Saint-Louis, Y Zhu, and G
Burger
2. ^ Genome structure and gene content
in protist mitochondrial DNAs
http://www.sciencemag.org/cgi/content/fu
ll/300/5626/1703/FIG1
[1] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas.
source: http://nar.oxfordjournals.org/co
ntent/vol26/issue4/images/gkb18201.gif
Diplobiontic) life cycle (organism with
both diploid and haploid "alternate
life stages" that reproduce asexually
by mitosis) with "sporic meiosis"
evolves.
In this life cycle haploid gametes fuse
to form a diploid zygote which divides
by meiosis producing haploid spores
that produce (differentiate?) gametes,
starting the cycle again.
Initially these species are single
celled in both stages (like
Haptophyta).
[1] Figure 23.1.Plants have
haplodiplontic life cycles that involve
mitotic divisions (resulting in
multicellularity) in both the haploid
and diploid generations (paths A and
D). Most animals are diplontic and
undergo mitosis only in the diploid
generation (paths B and D).
Multicellular organisms with haplontic
life cycles follow paths A and C.
COPYRIGHTED EDU
source: http://zygote.swarthmore.edu/pla
ntfig1.gif
[2] Drawn by self for Biological life
cycle Based on Freeman & Worth's
Biology of Plants (p. 171). GNU
source: http://en.wikipedia.org/wiki/Ima
ge:Sporic_meiosis.png
3
with flat christae evolve from those
with tubular christae.1 2
FOOTNOTES
1. ^
http://nar.oxfordjournals.org/cgi/conten
t/full/26/4/865
2. ^
http://microscope.mbl.edu/scripts/protis
t.php?func=integrate&myID=P1901&chinese_
flag=&system=&version=&documentID=&exclu
deNonLinkedIn=&imagesOnly=
3. ^ guess based on one jakobid having
tubular that change to flat, aside from
that cryptomonads are firs
[1] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas.
source: http://nar.oxfordjournals.org/co
ntent/vol26/issue4/images/gkb18201.gif
4 5 6
primitive living members of the Phylum
"Euglenozoa" (euglenids, leishmania,
trypanosomes, kinetoplastids) evolved
at this time.1 2 3
This is the oldest eukaryote to exhibit
colonialism. Perhaps eukaryote
colonialism is partially or fully
inherited from prokaryotes, but
colonialism may have evolved
independently again in eukaryotes.
This is the most ancient species known
to have a cell covering, which is of
the type "pellicle".
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Russell F. Doolittle, Da-Fei Feng,
Simon Tsang, Glen Cho, Elizabeth
Little, "Determining Divergence Times
of the Major Kingdoms of Living
Organisms with a Protein Clock",
Science, (1996).
4. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1961)
5. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1600mybn)
6. ^ Russell F.
Doolittle, Da-Fei Feng, Simon Tsang,
Glen Cho, Elizabeth Little,
"Determining Divergence Times of the
Major Kingdoms of Living Organisms with
a Protein Clock", Science, (1996).
(1800-1900 for eukaryote/prokaryote
separation)
[1] euglena
source: http://www.fcps.k12.va.us/Stratf
ordLandingES/Ecology/mpages/euglena.htm
[2] euglena
source: http://protist.i.hosei.ac.jp/PDB
/Images/Mastigophora/Euglena/genus1L.jpg
5 6 7
Phylum "Percolozoa" (also called
"Heterolobosea"1 ) (acrasid slime
molds) evolved at this time.2 3 4
FOOTN
OTES
1. ^ Ted Huntington.
2. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
1961mybn
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). 1600 mybn
4. ^ Russell F.
Doolittle, Da-Fei Feng, Simon Tsang,
Glen Cho, Elizabeth Little,
"Determining Divergence Times of the
Major Kingdoms of Living Organisms with
a Protein Clock", Science, (1996).
1800-1900 mybn
5. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
1961mybn (1961)
6. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). 1600 mybn
(1600mybn)
7. ^ Russell F. Doolittle, Da-Fei Feng,
Simon Tsang, Glen Cho, Elizabeth
Little, "Determining Divergence Times
of the Major Kingdoms of Living
Organisms with a Protein Clock",
Science, (1996). 1800-1900 mybn
(1800-1900(for eukaryote/prokaryote
separation)
[1] Stages of Naegleria fowleri, a
member of the Percolozoa. Adapted from
Image:Free-living amebic
infections.gif, which is from the CDC.
PD
source: http://en.wikipedia.org/wiki/Ima
ge:Naegleria.png
[2] CLASS Heterolobosea ORDER
Schizopyrenida Heteramoeba: The
flagellated form is large (30
�m), two flagella, an elongate
cytostome curving around the anterior
of the cell and forming a groove.
Nucleus with peripheral chromatin.
Probably feeds and divides as a
flagellate. One species. This genus is
most like Paratetramitus from which it
can be distinguished by peripheral
location of chromatin material. Cysts
without pores, excystment through a
weak region of wall. Marine.
Heteramoeba (het-err-a-me-ba) a naked
heterolobose amoeba, distinguished from
other types of naked amoebae with
lobose pseudopodia largely by
ultrastructural features, but trophic
heterolobose amoebae tend to form their
pseudopodially suddenly rather than
progressively. Phase contrast. This
picture was taken by David Patterson,
Linda Amaral Zettler, Mike Peglar and
Tom Nerad from cultures and other
materials maintained at the American
Type Culture Collection during 2001.
NONCOMMERCIAL USE
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
413
1
protist.
Multicellularity is a very important
event in the evolution of life on
earth. With multicellular organisms,
larger sized organisms could evolve.
There are many uncertainties
surrounding the origin of
multicellularity. Multicellularity may
have evolved independently for Plants,
Fungi and Animals, or multicellularity
may have evolved only once in
eukaryotes.
The key feature of this cell is that a
multicellular organism is made from a
single cell and the multicellular
organism is not a collection of
independent cells (colonialism). The
main difference between this organism
and single-celled organisms is the way
the cells stay fastened together after
cell division.
Which species was the first
multicellular species is not clear.
Multicellularity is found in all 3 life
cycles (haplontic, diplontic,
haplodiplontic). The 3 main life cycle
types (haplontic, etc.) probably
evolved in single cell species before
multicellularity evolved. If
multicellularity evolved once and is
inherited, perhaps all multicellular
organism descended from a single
haplodiplontic organism.
These multicellular organisms have
undifferentiated cells in the
multicellular stage (all cells in the
haploid or diploid multicellular
organism are made of one kind of cell).
FOOTNO
TES
1. ^ Michael Sleigh, "Protozoa and
Other Protists", (London; New York:
Edward Arnold, 1989).
1
differentiation evolves.
Multicellular organisms are no longer
all haploid or diploid gamete producing
cells (or spore producing if
haplodiplontic), but are made of gamete
(or spore) producing cells in addition
to somatic cells which copy asexually
through mitosis.
Now, in addition to being large
multicell organisms, multicellular
organisms can have differentiated cells
that form a variety of different shaped
structures, and perform different
functions.
FOOTNOTES
1. ^ Ted Huntington. guess. is after
haploid mitosis? after fusion?
4 5 6
ancestor of the "Chromalveolates"
evolving now. Chromalveolates include
the Chromista and Alveolata. The
Chromista include the 3 Phyla
Haptophyta, Cryptophyta (Cryptomonads),
and Heterokontophyta (brown algae
{kelp}, diatoms, water molds).
Alveolata include the 3 Phyla
Dinoflagellata, Apicomplexa (Malaria,
Toxoplasmosis), and Ciliophora
(ciliates).1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000).
4. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1973mybn)
5. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1600mybn)
6. ^ Sandra L. Baldauf,
A. J. Roger, I. Wenk-Siefert, W. F.
Doolittle, "A Kingdom-Level Phylogeny
of Eukaryotes Based on Combined Protein
Data", Science, Vol 290, num 5493, p
972, (2000). has heterkonts before
ciliophora and apicomplexa branch
MORE INFO
[1] "Brown alga". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Brown_alga
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Beautiful marine diatoms as seen
through a microscope. These tiny
phytoplankton are encased within a
silicate cell wall. Image ID: corp2365,
NOAA Corps Collection Photographer: Dr.
Neil Sullivan, University of Southern
Calif. NOAA This image is a work of
the National Oceanic and Atmospheric
Administration, taken or made during
the course of an xxxxx? official
duties. As works of the U.S. federal
government, all NOAA images are in the
public domain.
source: http://en.wikipedia.org/wiki/Ima
ge:Diatoms_through_the_microscope.jpg
4 5 6
ancestor of Chromalveolate Phlyum
Haptophyta evolving now.1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000).has heterkonts before ciliophora
and apicomplexa branch
4. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1973mybn)
5. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1600mybn)
6. ^ Sandra L. Baldauf,
A. J. Roger, I. Wenk-Siefert, W. F.
Doolittle, "A Kingdom-Level Phylogeny
of Eukaryotes Based on Combined Protein
Data", Science, Vol 290, num 5493, p
972, (2000). (has heterkonts before
ciliophora and apicomplexa branch)
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Emiliania huxleyi, a
coccolithophore. Photo courtesy Dr.
Markus Geisen - photographer, and The
Natural History Museum. PD
source: http://en.wikipedia.org/wiki/Ima
ge:Emiliania_huxleyi_3.jpg
4 5 6
ancestor of the Chromalveolate Phylum
"Cryptophyta" (Cryptomonads) evolving
now.1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000).
4. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1973mybn)
5. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1600mybn)
6. ^ Sandra L. Baldauf,
A. J. Roger, I. Wenk-Siefert, W. F.
Doolittle, "A Kingdom-Level Phylogeny
of Eukaryotes Based on Combined Protein
Data", Science, Vol 290, num 5493, p
972, (2000). has heterkonts before
ciliophora and apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
ancestor of the Chromalveolate Phylum
"Heterokontophyta" (Heterokonts also
called Stramenopiles) evolving now.
Heterokonts include brown algae,
diatoms, golden algae, axodines,
yellow-green algae, water moulds and
slime nets.1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
Algae (Phaeophyta) evolves now.1 2 3
Brown Algae is the most genetically
ancient multicellular organism still
living on earth. In addition to being
first to evolve multicellularity, cell
differentiation (cells of different
types) is already present in all brown
algae.
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
evolve.1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
molds (Oomycetes OemISETEZ) evolve.1 2
3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
(Ciliates, Dinoflagellates,
Apicomplexans) evolve.1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
FOOTN
OTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Sandra L. Baldauf, A. J.
Roger, I. Wenk-Siefert, W. F.
Doolittle, "A Kingdom-Level Phylogeny
of Eukaryotes Based on Combined Protein
Data", Science, Vol 290, num 5493, p
972, (2000). has heterkonts before
ciliophora and apicomplexa branch
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
4. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1973mybn)
5. ^ Sandra L. Baldauf,
A. J. Roger, I. Wenk-Siefert, W. F.
Doolittle, "A Kingdom-Level Phylogeny
of Eukaryotes Based on Combined Protein
Data", Science, Vol 290, num 5493, p
972, (2000). has heterkonts before
ciliophora and apicomplexa branch
(1600mybn)
6. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
4 5 6
FOOTNOT
ES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Sandra L. Baldauf, A. J. Roger, I.
Wenk-Siefert, W. F. Doolittle, "A
Kingdom-Level Phylogeny of Eukaryotes
Based on Combined Protein Data",
Science, Vol 290, num 5493, p 972,
(2000). has heterkonts before
ciliophora and apicomplexa branch
4. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1973mybn)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (1600mybn)
6. ^ Sandra L.
Baldauf, A. J. Roger, I. Wenk-Siefert,
W. F. Doolittle, "A Kingdom-Level
Phylogeny of Eukaryotes Based on
Combined Protein Data", Science, Vol
290, num 5493, p 972, (2000). has
heterkonts before ciliophora and
apicomplexa branch
MORE INFO
[1]
http://www.sirinet.net/~jgjohnso/apbio30
.html
[1] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group COPYRIGHTED
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas. COPYRIGHTED
source: http://nar.oxfordjournals.org/cg
i/content/full/26/4/865
3 4
(the Phyla "Radiolaria", "Cercozoa",
and "Foraminifera") evolve now.1 2
This marks the beginning of the
protists described as "amoeboid",
because they have pseudopods.
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). has 1600my for excavates,
discricristales, rhizaria,
chromalveolates, (1600my)
4. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004). I
use this estimate
[1] FIG. 2. The tree of life based on
molecular, ultrastructural and
palaeontological evidence. Contrary to
widespread assumptions, the root is
among the eubacteria, probably within
the double-enveloped Negibacteria, not
between eubacteria and archaebacteria
(Cavalier-Smith, 2002b); it may lie
between Eobacteria and other
Negibacteria (Cavalier-Smith, 2002b).
The position of the eukaryotic root has
been nearly as controversial, but is
less hard to establish: it probably
lies between unikonts and bikonts (Lang
et al., 2002; Stechmann and
Cavalier-Smith, 2002, 2003). For
clarity the basal eukaryotic kingdom
Protozoa is not labelled; it comprises
four major groups (alveolates, cabozoa,
Amoebozoa and Choanozoa) plus the small
bikont phylum Apusozoa of unclear
precise position; whether Heliozoa are
protozoa as shown or chromists is
uncertain (Cavalier-Smith, 2003b).
Symbiogenetic cell enslavement occurred
four or five times: in the origin of
mitochondria and chloroplasts from
different negibacteria, of
chromalveolates by the enslaving of a
red alga (Cavalier-Smith, 1999, 2003;
Harper and Keeling, 2003) and in the
origin of the green plastids of
euglenoid (excavate) and chlorarachnean
(cercozoan) algae-a green algal cell
was enslaved either by the ancestral
cabozoan (arrow) or (less likely) twice
independently within excavates and
Cercozoa (asterisks) (Cavalier-Smith,
2003a). The upper thumbnail sketch
shows membrane topology in the
chimaeric cryptophytes (class
Cryptophyceae of the phylum Cryptista);
in the ancestral chromist the former
food vacuole membrane fused with the
rough endoplasmic reticulum placing the
enslaved cell within its lumen (red) to
yield the complex membrane topology
shown. The large host nucleus and the
tiny nucleomorph are shown in blue,
chloroplast green and mitochondrion
purple. In chlorarachneans (class
Chlorarachnea of phylum Cercozoa) the
former food vacuole membrane remained
topologically distinct from the ER to
become an epiplastid membrane and so
did not acquire ribosomes on its
surface, but their membrane topology is
otherwise similar to the cryptophytes.
The other sketches portray the four
major kinds of cell in the living world
and their membrane topology. The upper
ones show the contrasting ancestral
microtubular cytoskeleton (ciliary
roots, in red) of unikonts (a cone of
single microtubules attaching the
single centriole to the nucleus, blue)
and bikonts (two bands of microtubules
attached to the posterior centriole and
an anterior fan of microtubules
attached to the anterior centriole).
The lower ones show the single plasma
membrane of unibacteria (posibacteria
plus archaebacteria), which were
ancestral to eukaryotes and the double
envelope of negibacteria, which were
ancestral to mitochondria and
chloroplasts (which retained the outer
membrane, red).
source: http://aob.oxfordjournals.org/cg
i/content/full/95/1/147/FIG2
[2] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group.
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
3 4
now.1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). has 1600mybn for
excavates, discricristales, rhizaria,
chromalveolates
2. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). has 1600mybn for excavates,
discricristales, rhizaria,
chromalveolates (1600mybn)
4. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
[1] FIG. 2. The tree of life based on
molecular, ultrastructural and
palaeontological evidence. Contrary to
widespread assumptions, the root is
among the eubacteria, probably within
the double-enveloped Negibacteria, not
between eubacteria and archaebacteria
(Cavalier-Smith, 2002b); it may lie
between Eobacteria and other
Negibacteria (Cavalier-Smith, 2002b).
The position of the eukaryotic root has
been nearly as controversial, but is
less hard to establish: it probably
lies between unikonts and bikonts (Lang
et al., 2002; Stechmann and
Cavalier-Smith, 2002, 2003). For
clarity the basal eukaryotic kingdom
Protozoa is not labelled; it comprises
four major groups (alveolates, cabozoa,
Amoebozoa and Choanozoa) plus the small
bikont phylum Apusozoa of unclear
precise position; whether Heliozoa are
protozoa as shown or chromists is
uncertain (Cavalier-Smith, 2003b).
Symbiogenetic cell enslavement occurred
four or five times: in the origin of
mitochondria and chloroplasts from
different negibacteria, of
chromalveolates by the enslaving of a
red alga (Cavalier-Smith, 1999, 2003;
Harper and Keeling, 2003) and in the
origin of the green plastids of
euglenoid (excavate) and chlorarachnean
(cercozoan) algae-a green algal cell
was enslaved either by the ancestral
cabozoan (arrow) or (less likely) twice
independently within excavates and
Cercozoa (asterisks) (Cavalier-Smith,
2003a). The upper thumbnail sketch
shows membrane topology in the
chimaeric cryptophytes (class
Cryptophyceae of the phylum Cryptista);
in the ancestral chromist the former
food vacuole membrane fused with the
rough endoplasmic reticulum placing the
enslaved cell within its lumen (red) to
yield the complex membrane topology
shown. The large host nucleus and the
tiny nucleomorph are shown in blue,
chloroplast green and mitochondrion
purple. In chlorarachneans (class
Chlorarachnea of phylum Cercozoa) the
former food vacuole membrane remained
topologically distinct from the ER to
become an epiplastid membrane and so
did not acquire ribosomes on its
surface, but their membrane topology is
otherwise similar to the cryptophytes.
The other sketches portray the four
major kinds of cell in the living world
and their membrane topology. The upper
ones show the contrasting ancestral
microtubular cytoskeleton (ciliary
roots, in red) of unikonts (a cone of
single microtubules attaching the
single centriole to the nucleus, blue)
and bikonts (two bands of microtubules
attached to the posterior centriole and
an anterior fan of microtubules
attached to the anterior centriole).
The lower ones show the single plasma
membrane of unibacteria (posibacteria
plus archaebacteria), which were
ancestral to eukaryotes and the double
envelope of negibacteria, which were
ancestral to mitochondria and
chloroplasts (which retained the outer
membrane, red).
source: http://aob.oxfordjournals.org/cg
i/content/full/95/1/147/FIG2
[2] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group.
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
3 4
evolve now.1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). 1600mybn for excavates,
discricristales, rhizaria,
chromalveolates
2. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). 1600mybn for excavates,
discricristales, rhizaria,
chromalveolates (1600my)
4. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
[1] FIG. 2. The tree of life based on
molecular, ultrastructural and
palaeontological evidence. Contrary to
widespread assumptions, the root is
among the eubacteria, probably within
the double-enveloped Negibacteria, not
between eubacteria and archaebacteria
(Cavalier-Smith, 2002b); it may lie
between Eobacteria and other
Negibacteria (Cavalier-Smith, 2002b).
The position of the eukaryotic root has
been nearly as controversial, but is
less hard to establish: it probably
lies between unikonts and bikonts (Lang
et al., 2002; Stechmann and
Cavalier-Smith, 2002, 2003). For
clarity the basal eukaryotic kingdom
Protozoa is not labelled; it comprises
four major groups (alveolates, cabozoa,
Amoebozoa and Choanozoa) plus the small
bikont phylum Apusozoa of unclear
precise position; whether Heliozoa are
protozoa as shown or chromists is
uncertain (Cavalier-Smith, 2003b).
Symbiogenetic cell enslavement occurred
four or five times: in the origin of
mitochondria and chloroplasts from
different negibacteria, of
chromalveolates by the enslaving of a
red alga (Cavalier-Smith, 1999, 2003;
Harper and Keeling, 2003) and in the
origin of the green plastids of
euglenoid (excavate) and chlorarachnean
(cercozoan) algae-a green algal cell
was enslaved either by the ancestral
cabozoan (arrow) or (less likely) twice
independently within excavates and
Cercozoa (asterisks) (Cavalier-Smith,
2003a). The upper thumbnail sketch
shows membrane topology in the
chimaeric cryptophytes (class
Cryptophyceae of the phylum Cryptista);
in the ancestral chromist the former
food vacuole membrane fused with the
rough endoplasmic reticulum placing the
enslaved cell within its lumen (red) to
yield the complex membrane topology
shown. The large host nucleus and the
tiny nucleomorph are shown in blue,
chloroplast green and mitochondrion
purple. In chlorarachneans (class
Chlorarachnea of phylum Cercozoa) the
former food vacuole membrane remained
topologically distinct from the ER to
become an epiplastid membrane and so
did not acquire ribosomes on its
surface, but their membrane topology is
otherwise similar to the cryptophytes.
The other sketches portray the four
major kinds of cell in the living world
and their membrane topology. The upper
ones show the contrasting ancestral
microtubular cytoskeleton (ciliary
roots, in red) of unikonts (a cone of
single microtubules attaching the
single centriole to the nucleus, blue)
and bikonts (two bands of microtubules
attached to the posterior centriole and
an anterior fan of microtubules
attached to the anterior centriole).
The lower ones show the single plasma
membrane of unibacteria (posibacteria
plus archaebacteria), which were
ancestral to eukaryotes and the double
envelope of negibacteria, which were
ancestral to mitochondria and
chloroplasts (which retained the outer
membrane, red).
source: http://aob.oxfordjournals.org/cg
i/content/full/95/1/147/FIG2
[2] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group.
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
3 4
evolve now.1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). has 1600mybn for
excavates, discricristales, rhizaria,
chromalveolates
2. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). has 1600mybn for excavates,
discricristales, rhizaria,
chromalveolates (1600mybn)
4. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
[1] FIG. 2. The tree of life based on
molecular, ultrastructural and
palaeontological evidence. Contrary to
widespread assumptions, the root is
among the eubacteria, probably within
the double-enveloped Negibacteria, not
between eubacteria and archaebacteria
(Cavalier-Smith, 2002b); it may lie
between Eobacteria and other
Negibacteria (Cavalier-Smith, 2002b).
The position of the eukaryotic root has
been nearly as controversial, but is
less hard to establish: it probably
lies between unikonts and bikonts (Lang
et al., 2002; Stechmann and
Cavalier-Smith, 2002, 2003). For
clarity the basal eukaryotic kingdom
Protozoa is not labelled; it comprises
four major groups (alveolates, cabozoa,
Amoebozoa and Choanozoa) plus the small
bikont phylum Apusozoa of unclear
precise position; whether Heliozoa are
protozoa as shown or chromists is
uncertain (Cavalier-Smith, 2003b).
Symbiogenetic cell enslavement occurred
four or five times: in the origin of
mitochondria and chloroplasts from
different negibacteria, of
chromalveolates by the enslaving of a
red alga (Cavalier-Smith, 1999, 2003;
Harper and Keeling, 2003) and in the
origin of the green plastids of
euglenoid (excavate) and chlorarachnean
(cercozoan) algae-a green algal cell
was enslaved either by the ancestral
cabozoan (arrow) or (less likely) twice
independently within excavates and
Cercozoa (asterisks) (Cavalier-Smith,
2003a). The upper thumbnail sketch
shows membrane topology in the
chimaeric cryptophytes (class
Cryptophyceae of the phylum Cryptista);
in the ancestral chromist the former
food vacuole membrane fused with the
rough endoplasmic reticulum placing the
enslaved cell within its lumen (red) to
yield the complex membrane topology
shown. The large host nucleus and the
tiny nucleomorph are shown in blue,
chloroplast green and mitochondrion
purple. In chlorarachneans (class
Chlorarachnea of phylum Cercozoa) the
former food vacuole membrane remained
topologically distinct from the ER to
become an epiplastid membrane and so
did not acquire ribosomes on its
surface, but their membrane topology is
otherwise similar to the cryptophytes.
The other sketches portray the four
major kinds of cell in the living world
and their membrane topology. The upper
ones show the contrasting ancestral
microtubular cytoskeleton (ciliary
roots, in red) of unikonts (a cone of
single microtubules attaching the
single centriole to the nucleus, blue)
and bikonts (two bands of microtubules
attached to the posterior centriole and
an anterior fan of microtubules
attached to the anterior centriole).
The lower ones show the single plasma
membrane of unibacteria (posibacteria
plus archaebacteria), which were
ancestral to eukaryotes and the double
envelope of negibacteria, which were
ancestral to mitochondria and
chloroplasts (which retained the outer
membrane, red).
source: http://aob.oxfordjournals.org/cg
i/content/full/95/1/147/FIG2
[2] Fig. 1. A consensus phylogeny of
eukaryotes. The vast majority of
characterized eukaryotes, with the
notable exception of major subgroups of
amoebae, can now be assigned to one of
eight major groups. Opisthokonts (basal
flagellum) have a single basal
flagellum on reproductive cells and
flat mitochondrial cristae (most
eukaryotes have tubular ones).
Eukaryotic photosynthesis originated in
Plants; theirs are the only plastids
with just two outer membranes.
Heterokonts (different flagellae) have
a unique flagellum decorated with
hollow tripartite hairs (stramenopiles)
and, usually, a second plain one.
Cercozoans are amoebae with filose
pseudopodia, often living with in tests
(hard outer shells), some very
elaborate (foraminiferans). Amoebozoa
are mostly naked amoebae (lacking
tests), often with lobose pseudopodia
for at least part of their life cycle.
Alveolates have systems of cortical
alveoli directly beneath their plasma
membranes. Discicristates have discoid
mitochondrial cristae and, in some
cases, a deep (excavated) ventral
feeding groove. Amitochondrial
excavates lack substantial molecular
phylogenetic support, but most have an
excavated ventral feeding groove, and
all lack mitochondria. The tree shown
is based on a consensus of molecular
(1-4) and ultrastructural (16, 17) data
and includes a rough indication of new
ciPCR ''taxa'' (broken black lines)
(7-11). An asterisk preceding the taxon
name indicates probable paraphyletic
group.
source: http://www.sciencemag.org/cgi/co
ntent/full/300/5626/1703
3 4
fossils.1 2
FOOTNOTES
1. ^
http://www.ucl.ac.uk/GeolSci/micropal/ac
ritarch.html
2. ^ Knoll AH (1992) The early
evolution of eukaryotes: a
geological perspective. Science 256:
622-627
3. ^
http://www.ucl.ac.uk/GeolSci/micropal/ac
ritarch.html
4. ^ Knoll AH (1992) The early
evolution of eukaryotes: a
geological perspective. Science 256:
622-627
[1] Figure 1 Protistan microfossils
from the Roper Group. a, c, Tappania
plana, showing asymmetrically
distributed processes and bulbous
protrusions (arrow in a). b, detail of
a, showing dichotomously branching
process. d, Valeria lophostriata. e,
Dictyosphaera sp. f, Satka favosa. The
scale bar in a is 35 µm for a and c;
10 µm for b; 100 µm for d; 15 µm for
e; and 40 µm for f.
source: Nature 412
[2] Diagram showing basic
morphological classification of
acritarchs. COPYRIGHTED
source: http://www.ucl.ac.uk/GeolSci/mic
ropal/acritarch.html
fossil Grypania spiralis (an alga 10 cm
long) from BIF in Michigan. Oldest
algae fossil. 1 2
FOOTNOTES
1. ^ Han and Runnegar 1992. T.-M. Han
and B. Runnegar, Megascopic eukaryotic
algae from the 2.1-billion-year-old
Negaunee Iron-Formation, Michigan.
Science 257 (1992), pp.
232-235 science_2100_han_runnegar_algal
_cysts.pdf
2. ^ Schneider et al 2002. D.A.
Schneider, M.E. Bickford, W.F. Cannon,
K.J. Schulz and M.A. Hamilton, Age of
volcanic rocks and syndepositional iron
formations, Marquette Range Supergroup;
implications for the tectonic setting
of Paleoproterozoic iron formations of
the Lake Superior region. Can. J. Earth
Sci. 39 6 (2002), pp. 999-1012.
source: file:/root/web/Grypania_spiralis
_wmel0000.htm
source: http://www.peripatus.gen.nz/pale
ontology/lrgGrypaniaspiralis.jpg
Rocks.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
source:
2
relationship with cyanobacteria, which
form plastids (chloroplasts). Like
mitochondria, these organelles copy
themselves and are not made by the cell
DNA.1
FOOTNOTES
1. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
2. ^ S. Blair
Hedges, "The Origin and Evolution of
Model Organisms", Nature Reviews
Genetics 3, 838-849;
doi:10.1038/nrg929, (2002)., see
comments
3 4
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1513mybn)
4. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c1200)
3 4
to glaucophytes) evolves.1 2
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1609 mybn)
4. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c1500)
4 5 6
FOOTNOTES
1. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ Hwan Su Yoon, Jeremiah D. Hackett,
Claudia Ciniglia, Gabriele Pinto and
Debashish, "A Molecular Timeline for
the Origin of Photosynthetic
Eukaryotes", Molecular Biology and
Evolution, (2004).
4. ^ S. Blair Hedges, "The
Origin and Evolution of Model
Organisms", Nature Reviews Genetics 3,
838-849 (2002); doi:10.1038/nrg929,
(2002). (c1500my)
5. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c1400)
6. ^ Hwan Su
Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004). (1558my)
[1] ? COPYRIGHTED
source: http://protist.i.hosei.ac.jp/PDB
3/PCD3711/htmls/86.html
[2] ? COPYRIGHTED
source: http://protist.i.hosei.ac.jp/PDB
/Images/Others/Glaucocystis/
3
evolve from Unikonts (ancestrally only
one cilium). Opisthokonts have flat
mitochondrial cristae and go on to form
the Animal and Fungi kingdoms.1 2
FOOTN
OTES
1. ^ J Mol Evol (2003) 56:540
563 Phylogeny of Choanozoa, Apusozoa,
and Other Protozoa and Early Eukaryote
Megaevolution Thomas Cavalier-Smith,
Ema E.-Y. Chao
/home/ted/ulsf/docs/cav-smith_apusozoa
_fulltext.html
2. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
3. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
[1] cavalier-smith diagram COPYRIGHTED
source: cavalier_jmolevol_2003_56_540-56
3.pdf
[2] Figure 1. Phylogenetic hypothesis
of the eukaryotic lineage based on
ultrastructural and molecular data.
Organisms are divided into three main
groups distinguished by mitochondrial
cristal shape (either discoidal,
flattened or tubular). Unbroken lines
indicate phylogenetic relationships
that are firmly supported by available
data; broken lines indicate
uncertainties in phylogenetic
placement, resolution of which will
require additional data. Color coding
of organismal genus names indicates
mitochondrial genomes that have been
completely (Table 1), almost completely
(Jakoba, Naegleria and
Thraustochytrium) or partially (*)
sequenced by the OGMP (red), the FMGP
(black) or other groups (green). Names
in blue indicate those species whose
mtDNAs are currently being sequenced by
the OGMP or are future candidates for
complete sequencing. Amitochondriate
retortamonads are positioned at the
base of the tree, with broken arrows
denoting the endosymbiotic origin(s) of
mitochondria from a Rickettsia-like
eubacterium. Macrophar.,
Macropharyngomonas.
source: unknown
3 4
evolve now.1 2
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1587mybn)
4. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c1400)
[1] SUBPHYLUM Lobosa CLASS Amoebaea
Chaos diffluens, an amoeba. Photo
released by Dr. Ralf Wagner.
source: http://en.wikipedia.org/wiki/Ima
ge:Chaos_diffluens.jpg
[2] CLASS Amoebaea Mayorella
(may-or -ell-a) a medium sized
free-living naked amoeba with conical
pseudopodia. Central body is the
nucleus. Phase contrast. This picture
was taken by David Patterson of
material from Limulus-ridden sediments
at Plum Island (Massachusetts USA) in
spring and summer, 2001. NONCOMMERCIAL
USE
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
515
7 8 9 10 11
Phlya Chlorophyta (volvox, sea lettuce)
and Charophyta (Spirogyra) evolve. 1 2
3 4 5 6
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
4. ^ Daniel S. Heckman,1 David M.
Geiser,2 Brooke R. Eidell,1 Rebecca
L. Stauffer,1 Natalie L. Kardos,
"Molecular Evidence for the Early
Colonization of Land by Fungi and
Plants", Science 10 August 2001: Vol.
293. no. 5532, pp. 1129 - 1133 DOI:
10.1126/science.1061457, (2001).
5. ^ M. J.
Benton, "The Fossil Record 2", (London;
New York: Chapman & Hall, 1993). fr2b
6. ^
http://www.ucmp.berkeley.edu/greenalgae/
greenalgae.html
7. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(968mybn)
8. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1300mybn)
9. ^ Daniel S.
Heckman,1 David M. Geiser,2 Brooke R.
Eidell,1 Rebecca L. Stauffer,1
Natalie L. Kardos, "Molecular Evidence
for the Early Colonization of Land by
Fungi and Plants", Science 10 August
2001: Vol. 293. no. 5532, pp. 1129 -
1133 DOI: 10.1126/science.1061457,
(2001). (1061?)
10. ^ M. J. Benton, "The Fossil
Record 2", (London; New York: Chapman &
Hall, 1993). fr2b (1650-800mybn)
11. ^
http://www.ucmp.berkeley.edu/greenalgae/
greenalgae.html (1000my)
[1] Micrograph of Volvox aureus.
Copyright held by Dr. Ralf Wagner,
uploaded to German Wikipedia under
GFDL. Permission is granted to copy,
distribute and/or modify this document
under the terms of the GNU Free
Documentation License, Version 1.2 or
any later version published by the Free
Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no
Back-Cover Texts. Subject to
disclaimers.
source: http://en.wikipedia.org/wiki/Vol
vox
[2] Photo of green algal growth
(Enteromorpha sp.) on rocky areas of
the ocean intertidal shore, indicating
a nearby nutrient source (in this case
land runoff). Photographed by Eric
Guinther near Kahuku, O'ahu,
Hawai'i. GFDL Permission is granted
to copy, distribute and/or modify this
document under the terms of the GNU
Free Documentation License, Version 1.2
or any later version published by the
Free Software Foundation; with no
Invariant Sections, no Front-Cover
Texts, and no Back-Cover Texts Subject
to disclaimers
source: http://en.wikipedia.org/wiki/Ima
ge:Intertidal_greenalgae.jpg
3 4
now.1 2
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1428mybn)
4. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1300mybn)
[1] Close-up of a red alga (Genus?
Laurencia), Class Florideophyceae,
Order=? a marine seaweed from Hawaii.
GNU
source: http://en.wikipedia.org/wiki/Ima
ge:Laurencia.jpg
[2] Bangia atropurpurea Profile:
unbranched filaments in tufts. Often
forming dense fringes in the spalsh
zone. Uniseriate at base, multiseriate
above with protoplasts separate in a
firm gelatinous sheath. Stellate
chloroplasts. US NOAA PD
source: http://www.glerl.noaa.gov/seagra
nt/GLWL/Algae/Rhodophyta/Cards/Bangia.ht
ml
4
is enslaved by a chromealveolate
eukaryote to form a plastid in the
chromealveolate. This kind of plastid
is presumably inherited by all other
chromalveolates (brown algae, diatoms,
water molds, Dinoflagellata,
Apicomplexa, ciliates) that have
plastids.1 2 3
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ THOMAS CAVALIER-SMITH,
"Economy, Speed and Size Matter:
Evolutionary Forces Driving Nuclear
Genome Miniaturization and Expansion",
* Oxford Journals * Life
Sciences * Annals of Botany *
Volume 95, Number 1 *, (2005).
3. ^
Cavalier-Smith image from paper - have
to find source but
file:///home/ted/ulsf/docs/rooting_euk_t
ree_cav-smith_science.html or THOMAS
CAVALIER-SMITH, "Economy, Speed and
Size Matter: Evolutionary Forces
Driving Nuclear Genome Miniaturization
and Expansion", * Oxford Journals
* Life Sciences * Annals of
Botany * Volume 95, Number 1
*, (2005). are similar
4. ^ Richard Dawkins,
"The Ancestor's Tale", (Boston, MA:
Houghton Mifflin Company, 2004).
3
(red algae) fossils (Bangiomorpha
pubescens) from Hunting Formation,
Somerset Island, arctic Canada. 1 2
FOO
TNOTES
1. ^ Science 1990 vol 250 Butterfield
N. J. A. H. Knoll K. Swett 1990 A
bangiophyte red alga from the
Proterozoic of Arctic Canada. Science
250: 104-107
2. ^ Paleobiology Volume 26, Issue
3 (September
2000) http://www.bioone.org/perlserv/?r
equest=get-document&doi=10.1666%2F0094-8
373%282000%29026%3C0386%3ABPNGNS%3E2.0.C
O%3B2
3. ^ Science 1990 vol 250 Butterfield
N. J. A. H. Knoll K. Swett 1990 A
bangiophyte red alga from the
Proterozoic of Arctic Canada. Science
250: 104-107
[1] get images from Life on a Young
Planet, Knoll
source: Science 1990 vol 250
Butterfield N. J. A. H. Knoll K. Swett
1990 A bangiophyte red alga from the
Proterozoic of Arctic Canada. Science
250: 104-107[ISI][Medline]
[2] Figure 2. Griffithsia pacifica
(Florideophyceae). Electron micrograph
showing cytoplasm with numerous
chloroplasts (C) and starch (S). Starch
is the photosynthetic reserve and is
deposited free in the cytoplasm.
source: (American Journal of Botany.
2004;91:1494-1507.)
3 4
"Microsporidia" evolves.1 2
FOOTNOTES
1. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849 (2002);
doi:10.1038/nrg929, (2002). (>1460mybn)
4. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (c1100mybn)
MORE INFO
[1]
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=93911
[1] Sporoblast of the Microsporidium
Fibrillanosema crangonycis. Electron
micrograph taken by Leon White. GNU
source: http://en.wikipedia.org/wiki/Ima
ge:Fibrillanosema_spore.jpg
[2] Spironema
multiciliatum Spironema:
Octosporoblastic sporogony producing
horseshoe-shaped monokaryotic spores in
sporophorous vesicles; monomorphic,
diplokaryotic and monokaryotic;
merogony - last generation merozoites
are diplokaryotic; sporogony - initial
division of the sporont nuclei is
meiotic as indicated by the occurrence
of synaptonemal complexes; spores are
horse-shoe-shaped, with swollen ends in
T. variabilis and have one elongate
nucleus; exospore with three layers,
endospore is of medium thickness;
polaroplast composed of two lamellar
parts, an anterior part of closely
packed lamellae and a posterior part of
wider compartments; polar tube is
isofilar and forms, in the posterior
quarter of the spore, 3-4 coils in a
single rank (T. variabilis) or 8-10
coils in a single rank (T. chironomi);
type species Toxoglugea vibrio in
adipose tissue of larvae of Ceratopogon
sp. (Diptera, Ceratopogonidae).
Spironema (spire-oh-knee-ma)
multiciliatum Klebs, 1893. Cells are
lanceolate, relatively flattened and
flexible. The cells have a spiral
groove, long kinetics and a tail, which
tapers posteriorly, and are about 15 -
21 microns without the tail. The
nucleus is located anteriorly or near
the centre of the cell. When the cells
are squashed, the cells are more
flexible. Food materials are seen under
the cell surface. Rarely observed.
This picture was taken by Won Je Lee
using conventional photographic film
using a Zeiss Axiophot microscope of
material collected in marine sediments
of Botany Bay (Sydney, Australia). The
image description refers to material
from Botany Bay. NONCOMMERCIAL USE
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
3928
3 4
evolves.1 2
FOOTNOTES
1. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849 (2002);
doi:10.1038/nrg929, (2002). (1460mybn)
4. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (1000mybn)
MORE INFO
[1]
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=71577&tree=0.1
[2]
http://en.wikipedia.org/wiki/Chytridiomy
cota
[1] Chytrids (Chytridiomycota): The
Primitive Fungi These fungi are
mostly aquatic, are notable for having
a flagella on the cells (a flagella is
a tail, somewhat like a tail on a sperm
or a pollywog), and are thought to be
the most primitive type of
fungi. actual photo comes
from: http://www.csupomona.edu/~jcclark
/classes/bot125/resource/graphics/chy_al
l_sph.html
source: http://www.davidlnelson.md/Cazad
ero/Fungi.htm
[2] Chytridiomycota - Blastocladiales
- zoospore of Allomyces (phase contrast
illumination) X 2000
source: http://www.mycolog.com/chapter2b
.htm
2
(Mesomycetozoea/DRIPs,
Choanoflagellates) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). moved to 1000my from
1200 (Dawkins)
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). moved to 1000my
from 1200 (Dawkins)
(DRIPs) evolve. 1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
[1] Ichthyophonus, a fungus-like
protistan that occurs in high
prevalence in Pacific Ocean perch
(Sebastes aultus) and yellowtail
rockfish (Sebastes flavedus). Note the
parasite forms branching hyphae-like
structures. Ichthyophonus hoferi has
caused massive mortalities in herring
in the Atlantic ocean, and has recently
been reported to cause disease in wild
Pacific herring from Washington through
Alaska. COPYRIGHTED EDU
source: http://oregonstate.edu/dept/salm
on/projects/images/16Ichthyophonus.jpg
[2] Microscopic appearence of the
organism is dependent on its stage of
development. The stages include (1)
spore at ''resting'' stage, (2)
germinating spore, (3) hyphal
stage. It is believed that there are
two forms of Ichthyophonus, both
belonging to one genus. One of them is
known as the ''salmon'' form, occuring
in freshwater and cold-preferring sea
fishes: this form is characterized by
its ability to produce long tubulose
germ hyphae. The other is called the
''aquarium fish'' form, typical of the
tropical freshwater fishes. This form
is completely devoid of hyphae.
Developmental cycle of Ichthyophonus
hoferi: 1-5 - development of
''daughter'' spores, 7-11 - development
of resting spore from the ''daughter''
spore, 12-19 - development of resting
spore by fragmentation. COPYRIGHTED
source: http://www.fao.org/docrep/field/
003/AC160E/AC160E02.htm
1
evolve in unicellular eukaryote living
objects. This is the first proto eye.
FOOTN
OTES
1. ^
http://www.sidwell.edu/us/science/vlb5/L
abs/Classification_Lab/Eukarya/Protista/
Euglenozoa/
7 8
"Choanoflagellates" and "Acanthoecida"
evolve. 1 2 3 4 5 6
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=114293
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
4. ^
http://microscope.mbl.edu/scripts/protis
t.php?func=integrate&myID=P2691&chinese_
flag=&system=&version=&documentID=&exclu
deNonLinkedIn=&imagesOnly=
5. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1513 (drips?) and 1450 choano)
6. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (1000 drips and 900 choano)
7. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004). (1513 (drips?) and 1450 choano)
8. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (1000 drips and 900 choano)
[1] DOMAIN Eukaryota - eukaryotes
KINGDOM Protozoa (Goldfuss, 1818) R.
Owen, 1858 - protozoa SUBKINGDOM
Sarcomastigota (means=?) PHYLUM
Choanozoa CLASS
Choanoflagellatea (Choanoflagellates
and Acanthoecida) ORDER
Acanthoecida Saepicula: Cells
solitary, lorica funnel-shaped, 2
chambers delimited by a waist;
constructed of rod-shaped costal
strips; posterior chamber obconical
with 2 series of costae located more or
less regularly around chamber, one
series almost parallel to the long axis
of cell and second series almost
perpendicular to long axis; anterior
chamber formed by ring of equally
spaced longitudinal costae surmounted
by single transverse costa; marine
This image is based on a drawing
provided by Won Je Lee. NONCOMMERCIAL
USE
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
3229
[2] Choanoeca: Cells solitary with
distinct, firm flask-shaped theca more
or less closely investing protoplast,
with short pedicel; collar relatively
long, widely expanded; flagellum absent
in adult, but produced prior to cell
division for locomotory use by juvenile
cell; in marine and brackish habitats,
frequently attached to filamentous
algae and hydrozoa Choanoeca
(ko-an-o-eek-a), an unusual loricate
collar flagellate (choanoflagellate) in
that the usual form is without a
flagellum. Flagellated motile stage is
occasionally produced. Widely dispersed
pseudopodial elements of the collar are
evident in this image. Differential
interference contrast. This picture
was taken by David Patterson and Aimlee
Laderman of material collected from a
freshwater Atantic white cedar swamp at
Cumloden near Woods Hole in
Massachusetts, USA in spring and
summer, 2001. NONCOMMERCIAL USE
source: http://microscope.mbl.edu/script
s/microscope.php?func=imgDetail&imageID=
170
3 4 5
multicellularity evolves, where a
zygote produces differentiated cells
that stick together to form one
organism.1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (c850my)
4. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1351my)
5. ^ Ted Huntington, compromise between
Dawkins and Hedges, et al.
(compromise=1055)
4 5 6
evolve. Metazoans are multicellular,
but their cells perform different
functions and originate from one
cell(?). This is`also the beginning of
the Animal Subkingdom "Radiata",
species with radial symmetry. These are
the sponges. There are only 3 kinds of
metazoans: sponges, cnidarians, and
bilaterians (which include all insects
and vertibrates). Sponges are the
first organisms whose DNA codes for
more than one kind of cell. Sponges
have 3 different cell types. Some
cells form a body wall, some digest
food, some form a skeletal frame.1 2 3
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
4. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (c850my)
5. ^ S Blair Hedges, Jaime E
Blair, Maria L Venturi and Jason L
Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1351my)
6. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005). (600?)
[1]
source: http://www.museums.org.za/bio/me
tazoa.htm
[2]
source: http://www.museums.org.za/bio/me
tazoa.htm
2
evolve. These genes regulate the
building of major body parts.1
FOOTNOTE
S
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^ same as
sponge
5 6 7 8
division "Zygomycota" (bread molds, pin
molds, microsporidia,...) evolving
now.1 2 3 4
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ Daniel
S. Heckman,1 David M. Geiser,2 Brooke
R. Eidell,1 Rebecca L. Stauffer,1
Natalie L. Kardos, "Molecular Evidence
for the Early Colonization of Land by
Fungi and Plants", Science 10 August
2001: Vol. 293. no. 5532, pp. 1129 -
1133 DOI: 10.1126/science.1061457,
(2001).
3. ^ S. Blair Hedges and Sudhir Kumar,
"Genomic clocks and evolutionary
timescales", Trends in Genetics
Volume 19, Issue 4 , April 2003, Pages
200-206, (2003).
4. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
5. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1250mybn)
6. ^ Daniel S. Heckman,1 David M.
Geiser,2 Brooke R. Eidell,1 Rebecca
L. Stauffer,1 Natalie L. Kardos,
"Molecular Evidence for the Early
Colonization of Land by Fungi and
Plants", Science 10 August 2001: Vol.
293. no. 5532, pp. 1129 - 1133 DOI:
10.1126/science.1061457, (2001).
(1107mybn)
7. ^ S. Blair Hedges and Sudhir Kumar,
"Genomic clocks and evolutionary
timescales", Trends in Genetics
Volume 19, Issue 4 , April 2003, Pages
200-206, (2003). (1107mybn)
8. ^ Richard Dawkins,
"The Ancestor's Tale", (Boston, MA:
Houghton Mifflin Company, 2004).
(c850m)
[1] Figure 2. Zygomycota A: sporangia
of Mucor sp. B: whorl of sporangia of
Absidia sp. C: zygospore of
Zygorhynchus sp. D: sporangiophore and
sporangiola of Cunninghamella sp.
source: http://www.botany.utoronto.ca/Re
searchLabs/MallochLab/Malloch/Moulds/Cla
ssification.html
[2] Figure 3. Syncephalis, a member
of the Zygomycota parasitic on other
Zygomycota
source: http://www.botany.utoronto.ca/Re
searchLabs/MallochLab/Malloch/Moulds/Cla
ssification.html
3
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=11212&tree=0.1
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2
jellies) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c750)
4 5 6
division "Glomeromycota" (Arbuscular
mycorrhizal fungi) evolving now.1 2 3
F
OOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ S. Blair Hedges, "The
Origin and Evolution of Model
Organisms", Nature Reviews Genetics 3,
838-849; doi:10.1038/nrg929, (2002).
3. ^ S
Blair Hedges, Jaime E Blair, Maria L
Venturi and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004).
4. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c750mybn)
5. ^ S. Blair Hedges,
"The Origin and Evolution of Model
Organisms", Nature Reviews Genetics 3,
838-849 (2002); doi:10.1038/nrg929,
(2002). (c1460 to 1210mybn)
6. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(estimate that between 947 and 968)
[1] germinating Gigaspora decipiens
source: http://pages.unibas.ch/bothebel/
people/redecker/ff/glomero.htm
[2] Archaeospora leptoticha spores
source: http://pages.unibas.ch/bothebel/
people/redecker/ff/glomero.htm
4 5 6
jellyfish evolves. Jellyfish have
photon detecting cells and a lens made
of ?.1 2 3
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
3. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
4. ^ Richard
Cowen, "History of Life", (Malden, MA:
Blackwell, 2005). (580my)
5. ^ Richard Dawkins,
"The Ancestor's Tale", (Boston, MA:
Houghton Mifflin Company, 2004).
(c700my)
6. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1298my)
4 5 6
the phylum "Basidiomycota" (most
mushrooms, rusts, club fungi) evolve.1
2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ S.
Blair Hedges, "The Origin and Evolution
of Model Organisms", Nature Reviews
Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
4. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(968my)
5. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849 (2002);
doi:10.1038/nrg929, (2002). (1210my)
6. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (700my)
[1] Amanita muscaria
(Homobasidiomycetes)
source: http://en.wikipedia.org/wiki/Ima
ge:Agaricales.jpg
[2] Basidiomycete Life Cycle tjv
source: http://botit.botany.wisc.edu/ima
ges/332/Basidiomycota/General_basidio/Ba
sidiomycete_Life_Cycle_tjv.php?highres=t
rue
4 5 6
"Ascomycota" (yeasts, truffles,
Penicillium, morels, sac fungi)
evolves.1 2 3
FOOTNOTES
1. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
2. ^ S.
Blair Hedges, "The Origin and Evolution
of Model Organisms", Nature Reviews
Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
3. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
4. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1009my)
5. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849 (2002);
doi:10.1038/nrg929, (2002). (1140my)
6. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (700my)
[1] white truffle
cutted photographed by
myself GNU head Permission is
granted to copy, distribute and/or
modify this document under the terms of
the GNU Free Documentation License,
Version 1.2 or any later version
published by the Free Software
Foundation; with no Invariant Sections,
no Front-Cover Texts, and no Back-Cover
Texts. A copy of the license is
included in the section entitled ''Text
of the GNU Free Documentation
License.''
source: http://upload.wikimedia.org/wiki
pedia/commons/f/fd/Truffle_washed_and_cu
tted.jpg
[2] EColi-Scerevisiae.jpg (50KB, MIME
type: image/jpeg) Wikimedia Commons
logo This is a file from the Wikimedia
Commons. The description on its
description page there is shown
below. Escherichia coli (little
forms) & Saccharomyces cerevisiae (big
forms) by MEB Public domain This file
has been released into the public
domain by the copyright holder, its
copyright has expired, or it is
ineligible for copyright. This applies
worldwide. brewer's yeast/baker's
yeast
source: http://en.wikipedia.org/wiki/Ima
ge:EColi-Scerevisiae.jpg
7 8 9 10 11 12
largest and second largest lines of
Fungi (Ascomycota and Basidiomycota)
splitting now.1 2 3 4 5 6
FOOTNOTES
1. ^ Daniel S. Heckman,1 David M.
Geiser,2 Brooke R. Eidell,1 Rebecca
L. Stauffer,1 Natalie L. Kardos,
"Molecular Evidence for the Early
Colonization of Land by Fungi and
Plants", Science 10 August 2001: Vol.
293. no. 5532, pp. 1129 - 1133 DOI:
10.1126/science.1061457, (2001).
2. ^ S. Blair
Hedges and Sudhir Kumar, "Genomic
clocks and evolutionary timescales",
Trends in Genetics Volume 19, Issue 4 ,
April 2003, Pages 200-206, (2003).
3. ^ S Blair
Hedges, Jaime E Blair, Maria L Venturi
and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004).
4. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
5. ^ Richard
Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004).
6. ^ Emmanuel J. P. Douzery, Elizabeth
A. Snell, Eric Bapteste, Frédéric
Delsuc, "The timing of eukaryotic
evolution: Does a relaxed molecular
clock reconcile proteins and fossils?",
(PNAS) Proceedings of the National
Academy of Sciences of the UNites
States of America, (2001).
7. ^ Daniel S.
Heckman,1 David M. Geiser,2 Brooke R.
Eidell,1 Rebecca L. Stauffer,1
Natalie L. Kardos, "Molecular Evidence
for the Early Colonization of Land by
Fungi and Plants", Science 10 August
2001: Vol. 293. no. 5532, pp. 1129 -
1133 DOI: 10.1126/science.1061457,
(2001). (1208my)
8. ^ S. Blair Hedges and Sudhir
Kumar, "Genomic clocks and evolutionary
timescales", Trends in Genetics
Volume 19, Issue 4 , April 2003, Pages
200-206, (2003). (1208my)
9. ^ S Blair Hedges,
Jaime E Blair, Maria L Venturi and
Jason L Shoe, "A molecular timescale of
eukaryote evolution and the rise of
complex multicellular life", BMC
Evolutionary Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(968my)
10. ^ S. Blair Hedges, "The Origin and
Evolution of Model Organisms", Nature
Reviews Genetics 3, 838-849 (2002);
doi:10.1038/nrg929, (2002). (1210my)
11. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (700my)
12. ^ Emmanuel J. P. Douzery,
Elizabeth A. Snell, Eric Bapteste,
Frédéric Delsuc, "The timing of
eukaryotic evolution: Does a relaxed
molecular clock reconcile proteins and
fossils?", (PNAS) Proceedings of the
National Academy of Sciences of the
UNites States of America, (2001).
(727my)
5 6
symmetry) species evolves. Animal
phylum Acoelomorpha (acoela flat worms
and nemertodermatida) evolves. 1 2 3
Thi
s begins the Subkingdom "Bilateria". 4
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=201049&tree=0.1
3. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
4. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=201049&tree=0.1
5. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (630my)
6. ^ Richard Cowen,
"History of Life", (Malden, MA:
Blackwell, 2005). (575 (fossil is
older)
[1] Convoluta pulchra Smith and Bush
1991, a typical mud-inhabiting acoel
that feeds on diatoms
source: ?
3
evolve at this time. Protostomes
include the 3 infrakingdoms Ecdysozoa
(a variety of worms and the arthropods
{a huge group including all insects and
crustaceans}), Platyzoa (rotifers and
flatworms), and Lophotrochozoa
(brachiopods {clams}, molluscs
{snails}, and a variety of worms). 1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=198701
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (590my)
Doushantuo formation in China.1
FOOTNOT
ES
1. ^
http://biocrs.biomed.brown.edu/Books/Cha
pters/Ch%2019/Fossil-Embryos/NYtimes-mic
rofossils.html
2
Vernanimalcula, 178 um in length, from
Doushantuo Formation, China. First
fossil of organism with bilateral
symmetry, mouth, digestive track, gut
and anus.1
FOOTNOTES
1. ^ Science, Vol 305, Issue 5681,
218-222, 9 July 2004 Small Bilaterian
Fossils from 40 to 55 Million Years
Before the Cambrian Jun-Yuan Chen,1,2*
David J. Bottjer,3* Paola Oliveri,4
Stephen Q. Dornbos,3 Feng Gao,4 Seth
Ruffins,4 Huimei Chi,5 Chia-Wei Li,6
Eric H. Davidson4
http://www.sciencemag.org/cgi/content/
full/sci;305/5681/218
2. ^ Science, Vol 305, Issue 5681,
218-222, 9 July 2004 Small Bilaterian
Fossils from 40 to 55 Million Years
Before the Cambrian Jun-Yuan Chen,1,2*
David J. Bottjer,3* Paola Oliveri,4
Stephen Q. Dornbos,3 Feng Gao,4 Seth
Ruffins,4 Huimei Chi,5 Chia-Wei Li,6
Eric H. Davidson4
http://www.sciencemag.org/cgi/content/
full/sci;305/5681/218
[1] Fig. 2. Close-up images of
prominent anatomical features of
Vernanimalcula guizhouena. The scale
bar represents 18 µm in (A), 32 µm in
(B), 24 µm in (C), and 28 µm in (D).
SO, sensory organ, i.e., external pit;
LU, lumen; PH, pharynx; MO, mouth; CO,
coelomic lumen; CW, mesodermal coelomic
wall; GU, gut. (A) Detail of collared
mouth, multilayered pharynx, and one
anterior surface pit. In this image,
which is from the holotype specimen
(Fig. 1A), the floor of the pit can be
seen to be composed of a specialized
concave layer. Note the coelomic wall,
which here as elsewhere in these
specimens has a thickness of about 5 to
6 µm. (B) Mouth of a fourth specimen,
Q3105, displaying collared mouth and
pharynx, ventral view. (C) Lumen of
pharynx from a fifth specimen, X10419,
secondarily encrusted but revealing
morphology of opening of pharynx into
gut similar to that seen in the
specimens shown in Fig. 1. (D) Close-up
of spaced external pits, interpreted as
possible sensory organs, from the same
specimen as shown in Fig. 1B [compare
(A)].
source: http://www.sciencemag.org/cgi/co
ntent/full/sci;305/5681/218
[2] Fig. 1. Images of three
different, fairly well preserved
specimens of the bilaterally organized
fossil animal Vernanimalcula
guizhouena. Left panels show digitally
recorded, transmitted light images of
sections about 50 µm thick, which had
been ground from larger rock samples,
mounted on slides, and viewed through a
light microscope. Right panels show
color-coded representations of the
images on the left. These were prepared
by digital image overlay. Yellow,
external ectodermal layer; ochre,
coelomic mesodermal layer; red, surface
pits; mauve, pharynx; light tan,
endodermal wall of gut; gray-green,
lumen of mouth; dark gray, paired
coelomic cavities; lighter gray, lumen
of gut; brown, ''gland-like''
structures, with central lumen (B);
light green, mineral inclusions (C).
The scale bar represents 40 µm in (A),
55 µm in (B), and 46 µm in (C). (A)
Holotype specimen, X00305, slightly
tilted, almost complete ventral level
coronal section, passing through the
ventrally located mouth. (B) Coronal
section of second specimen, X08981,
passing through dorsal wall of pharynx
and displaying complete A-P length of
digestive tract, including posterior
end [not visible in (A)]. (C) Tilted
coronal section of third specimen,
X10475, possibly slightly squashed,
passing through dorsal wall of pharynx
and through the dorsal wall of the gut.
For dimensions, see Table 1.
source:
4 5
evolves. Ecdysozoa are animals that
molt (lose their outer skins) as they
grow.1 2
Ecdysozoa include:
the Phylum
"Chaetognatha" (Arrow Worms),
the
Superphylum "Aschelminthes", containing
the 5 Phlya:
"Kinorhyncha"
(kinorhynchs)
"Loricifera" (loriciferans)
"Nematoda" (round
worms)
"Nematomorpha" (horsehair worms),
"Priapulida" (priapulids)
the Superphlyum
"Panarthropoda" containing the 3
Phyla:
"Arthropoda" (arthropods: insects,
shell fish)
"Onychophora" (onychophorans)
"Tardigrada"
(tardigrades) 3
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Cowen, "History
of Life", (Malden, MA: Blackwell,
2005).
3. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=198710
4. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c580)
5. ^ Richard Cowen,
"History of Life", (Malden, MA:
Blackwell, 2005). (560)
2
nervous system evolves in bilaterians.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
(presumably)
2. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
(presumably)
in early bilaterians.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
beginning of the Subkingdom
Deuterostomia and Infrakingdom
"Coelomopora" (Ambulacraria) with the
two Phyla "Hemichordata" (acorn worms)
and "Echinodermata" (sea cucumbers, sea
urchins, starfish). 1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=198706
2
(Arrow Worms) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (570)
Hemichordonia (acorn worms) evolves.1
F
OOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
Echinodermata (sea cucumbers, sea
urchins, sand dollars, star fish)
evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
blood cells evolve in bilaterian
worms.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
4
Superphylum Gnathifera {gnathiferans},
Phylum Gastrotricha {gastrotrichs}, and
Phylum Platyhelminthes {flatworms})
evolve. 1 2 3
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=126691
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
4. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (565)
evolves.1 Chordata is a very large
group that contains all fish,
amphibians, reptiles and mammals.
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
Tunicata (tunicates {sea squirts})
evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
oxygen from water through a digestive
system, evolves in segmented worms.1
FO
OTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2
Ashelminthes (round worms, horsehair
worms, priapulids) and Pananthropoda
(arthropods, onychophorans,
tardigrades) separate. 1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c550)
MORE INFO
[1]
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=126686
Cephalochordata (lancelets) evolves.1
This is the first fish.
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
3
"Ashelminthes" evolves. This includes
the 5 Phyla:
Kinorhyncha (kinorhynchs),
Loricifera (loriciferans),
Nematoda (round worms),
Nematomorpha
(horsehair worms),
Priapulida (priapulids). 1
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=126691
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c550)
3
evolves. This includes the 5 Phyla:
Gna
thostomulida (gnathostomulids),
Cycliophora
(cycliophorans),
Micrognathozoa,
Rotifera (rotifers),
Acanthocephala
(acanthocephalans). 1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=126686
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c550)
3 4
Lophotrochozoa evolves. This includes
brachiopods, bryozoans, clams, squids
and octopuses (cephalopods), and
snails.1 2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Elizabeth Pennisi,
"Drafting a Tree", Science, (2003).
3. ^
Richard Dawkins, "The Ancestor's Tale",
(Boston, MA: Houghton Mifflin Company,
2004). (c547)
4. ^ Elizabeth Pennisi,
"Drafting a Tree", Science, (2003).
(550)
2
Lophophorata evolves. This includes
the two Phyla Phoronida (phoronids) and
Brachiopoda (brachiopods {clams,
oysters, muscles}).1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c547)
2
(phoronids) evolves. 1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c547)
2
Brachiopoda (brachiopods {clams,
oysters, muscles}) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c547)
2
Entoprocta (entoprocts) evolves.1
FOOTN
OTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c545)
Phanerozoic Eon. End Proterozoic Era,
start Paleozoic Era.1 2
FOOTNOTES
1. ^ The geological Society of America
ucmp.berkeley.edu
2. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2
(flatworms) and Gastrotricha
(gastrotrichs) evolve. 1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c543)
mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
(Bryozoans or moss animals) evolves.1
F
OOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c543)
2
Panarthropoda (Arthropods, Onychophora,
Tardigrada) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c543)
2
(insects, crustaceans) evolve.1
FOOTNOT
ES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c543)
2
(onychophorans) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c543)
2
(tardigrades) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c543)
evolves.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
[1] Aldanella may be mollusc, if
mollusc may be first known snail.
shell is 1.5 mm in diameter.
source: http://www.geology.ucdavis.edu/~
cowen/HistoryofLife/CH05images.html
3
Eutrochozoa (molluscs, ribbon, peanut,
spoon, and segmented worms) evolves. 1
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^
http://sn2000.taxonomy.nl/Taxonomicon/Ta
xonTree.aspx?id=201563
3. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (c541)
evolve.1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
[1]
http://www.ucmp.berkeley.edu/porifera/ar
chaeo.html
source: http://www.ucmp.berkeley.edu/por
ifera/archaeo.html
[2]
http://www.geology.ucdavis.edu/~cowen/Hi
storyofLife/CH05images.html
source: http://www.geology.ucdavis.edu/~
cowen/HistoryofLife/CH05images.html
2
(ribbon worms) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c541)
FOOTNOTES
1. ^ Xiao, S., Yang, Z. & Knoll, A. H.
Nature 391, 553-558 (1998). Article
ISI ChemPort
http://www.nature.com/cgi-taf/DynaPage
.taf?file=/nature/journal/v391/n6667/ful
l/391553a0_fs.html (not clear that
these are trilobite...this needs to be
checked)
2. ^
http://www.nature.com/nature/journal/v42
7/n6971/full/427205a.html (here it is
claimed they are trilobite embryos)
3. ^
science_266_5185_oldest_trilo.pdf has
510my
4. ^
http://www.ucmp.berkeley.edu/arthropoda/
trilobita/trilobitafr.html
2
(brachiopods, bryozoans, clams,
mussels, squids and octopuses
{cephalopods}, and snails) evolves.1
FO
OTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c539)
2
(segmented worms) evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c537)
2
Sipuncula (peanut worms) evolve.1
FOOTN
OTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004). (c537)
Vertebrata evolves.1 This Subphylum
contains most fish, all amphibians,
reptiles, and mammals.
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
(agnatha) evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
3 4
fish.1 2
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2. ^
http://news.bbc.co.uk/1/hi/sci/tech/5047
76.stm
3. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
4. ^
http://news.bbc.co.uk/1/hi/sci/tech/5047
76.stm
[1] Figure 4 The Lower Cambrian
agnathan vertebrate Haikouichthys
ercaicunensis Luo, Hu & Shu gen. et sp.
nov. from Haikou, Yunnan. Specimen
HZ-f-12-127. a, Entire specimen,
anterior to the left; more posterior
region appears to fade out into
sediment, possibly representing decay
of body; attempts to excavate this area
were not successful. Scale bar
equivalent to 5 mm. b, Detail of
anterior to show putative gill bars,
possible elements of cranial
endoskeleton, and pericardic area;
scale bar equivalent to 5 mm. c,
Camera-lucida drawing of specimen to
show interpretation. Numbers 1-6
indicate units of the branchial basket
that are identified with some
confidence; ?A-?C refer to less secure
identifications. Two possible areas
representing the pericardic cavity are
indicated. To the anterior of ?C a
triangular area with patches of
diagenetic mineralization is one
possibility; a fainter region to the
posterior is the alternative location.
COPYRIGHTED
source: http://www.nature.com/nature/jou
rnal/v402/n6757/fig_tab/402042a0_F4.html
measured in Kopli quarry, Tallinn,
Estonia.1 2
FOOTNOTES
1. ^ Science, Vol 281, Issue 5380,
1168-1170 , 21 August 1998
2. ^
Biogeochemical Evidence for
Dinoflagellate Ancestors in the Early
Cambrian J. Michael Moldowan, * Nina
M. Talyzina
Burgess Shale.1 2
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
2. ^
http://www.nmnh.si.edu/paleo/shale/pmare
lla.htm
[1] diagram
source: http://www.nmnh.si.edu/paleo/sha
le/pmarella.htm
[2] fossil
source: http://www.nmnh.si.edu/paleo/sha
le/pmarella.htm
end Cambrian period (543-490 mybn).1
FO
OTNOTES
1. ^ The geological Society of America
6 7 8
ancestor of all plants (Kingdom
Plantae) evolving at this time (in the
view that algae are protists and not
plants).1 2 3 4 5
FOOTNOTES
1. ^ Seung Yeo Moon-van der Staay,
Rupert De Wachter, Daniel Vaulot,
"Oceanic 18S rDNA sequences from
picoplankton reveal unsuspected
eukaryotic diversity", Nature, (2001).
2. ^
Elizabeth Pennisi, "Drafting a Tree",
Science, (2003).
3. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
4. ^ S. Blair Hedges,
"The Origin and Evolution of Model
Organisms", Nature Reviews Genetics 3,
838-849; doi:10.1038/nrg929, (2002).
5. ^ S
Blair Hedges, Jaime E Blair, Maria L
Venturi and Jason L Shoe, "A molecular
timescale of eukaryote evolution and
the rise of complex multicellular
life", BMC Evolutionary Biology 2004,
4:2 doi:10.1186/1471-2148-4-2,
(2004).
6. ^ S Blair Hedges, Jaime E Blair,
Maria L Venturi and Jason L Shoe, "A
molecular timescale of eukaryote
evolution and the rise of complex
multicellular life", BMC Evolutionary
Biology 2004, 4:2
doi:10.1186/1471-2148-4-2, (2004).
(1609my)
7. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004). (1500)
8. ^ S. Blair Hedges,
"The Origin and Evolution of Model
Organisms", Nature Reviews Genetics 3,
838-849 (2002); doi:10.1038/nrg929,
(2002). (1580)
source: http://protist.i.hosei.ac.jp/PDB
3/PCD3711/htmls/86.html
source: http://protist.i.hosei.ac.jp/PDB
/Images/Others/Glaucocystis/
3 4
non-vascular plant and vascular plant
lines splitting now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (c475)
4. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004). (c475)
3 4
non-vascular plants (Bryophytes)
(Liverworts, Hornworts, Mosses)
evolving now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ S26 (c475)
4. ^
S15 (c475)
[1] Phaeoceros laevis (L.) Prosk. gnu
source: http://en.wikipedia.org/wiki/Ima
ge:Anthoceros_levis.jpg
[2] Image of Phaeoceros (hornwort)
spores taken by J. Ziffer. public
domain
source: wiki
lampreys and hagfish lines separate.1
F
OOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
land plants. 1
FOOTNOTES
1. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
Gnathostomata) evolve.1 This large
group includes all jawed fish, all
amphibians, reptiles, and mammals.
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
Gnathostomata) Class Chondrichthyes
(cartilaginous fishes) evolve.1
FOOTNOT
ES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
phylum includes all tunicates, fishes,
amphibians, reptiles, birds, and
mammals. The living chordate with the
oldest DNA design are tunicates.1
FOOTN
OTES
1. ^ Elizabeth Pennisi, "Drafting a
Tree", Science, (2003).
end Ordovician period (490-443 mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
Ray-finned fishes (Subclass
Actinopterygii) evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
plants, Cooksonia. 1 2
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2. ^ M. J. Benton, "The Fossil Record
2", (London; New York: Chapman & Hall,
1993).
[1] Cooksonia pertoni with three
sporangia. Height of the plant 2.5
cm Pridolian (Upper
Silurian) Shropshire, England.
COPYRIGHTED
source: http://www.xs4all.nl/~steurh/eng
cook/ecookwal.html
[2] Cooksonia pertoni, fossilised
plant COPYRIGHTED UK
source: http://owen.nhm.ac.uk/piclib/web
images/0/0/900/936_sml.jpg
millipede Pneumodesmus. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
mybn), end Silurian period (443-417
mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
3 4
oldest line of living vascular plants
from the Division "Lycophyta" evolving
now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (c400)
4. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004). (c390)
[1] Lycopodiella cernua (L.) Pic. Serm.
plant from windward O'ahu (Hawai'i)
taken in December 2003 by Eric Guinther
and released under the GNU Free
Documentation License. gnu
source: http://en.wikipedia.org/wiki/Lyc
ophyte
[2] Fossil trunk of Lepidodendron
aculeatum showing leaf scars gnu
source: http://en.wikipedia.org/wiki/Lep
idodendron
FOOTNOTES
1. ^
http://www.nhm.ac.uk/nature-online/earth
/fossils/article-oldest-insect-fossil/th
e-oldest-fossil-insect-in-the-world.html
MORE INFO
[1]
http://www.nytimes.com/2004/02/11/scienc
e/11CND-INSECT.html?ei=5007&en=01db2c70c
5f2bd18&ex=1391922000&adxnnl=1&partner=U
SERLAND&adxnnlx=1146391843-YMWQeyxG2RWEx
JKHKf60mQ
[1] Rhyniognatha hirsti. COPYRIGHTED
source: http://www.nhm.ac.uk/nature-onli
ne/earth/fossils/article-oldest-insect-f
ossil/the-oldest-fossil-insect-in-the-wo
rld.html
Chondrichthyes) Subclass
Subterbranchialia and Subclass
Elasmobranchii (shark-like fishes)
separate.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
Superorder Holocephali (chimaeras: eg.
elephant fish) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
3 4
line and the line that leads to Seed
Plants (Gymnosperms and Angiosperms)
separating now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (318mybn)
4. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
(350mybn)
3 4
producing and Seed producing plant
lines separating now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (380mybn)
4. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
(350mybn)
forests. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
vertebrate. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
3 4
(Plant Division "Pteridophyta")
evolving now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (c390 (360
for living species)
4. ^ Hwan Su Yoon, Jeremiah
D. Hackett, Claudia Ciniglia, Gabriele
Pinto and Debashish, "A Molecular
Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004). (c390)
[1] Ferns, Melbourne Botanical
Gardens gnu
source: http://en.wikipedia.org/wiki/Fer
n
[2] An Australian tree fern growing
on O'ahu, Hawai'i. Photographed by Eric
Guinther. A tree fern unrolling a new
frond GNU
source: same
ice age. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
(354-290 mybn), end Devonian period
(417-354 mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
Superdivision Chondrostei (sturgeons
and paddlefish) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
Infradivsion Cladistia (Bichirs)
evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
toads, Salamanders) evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
3 4
oldest living Gymnosperms from the
Plant Kingdom evolving now.1 2
FOOTNOTE
S
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (c320 (360
for living species)
4. ^ Hwan Su Yoon, Jeremiah
D. Hackett, Claudia Ciniglia, Gabriele
Pinto and Debashish, "A Molecular
Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004). (c350
(300 for radiation)
MORE INFO
[1] "Gymnosperms". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Gymnosperms
[1] Leaves and female cone of Cycas
revoluta GNU
source: http://en.wikipedia.org/wiki/Cyc
ad
[2] Leaves and male cone of Cycas
revoluta Photo of Cycas (sago cycad)
inflorescence, taken July 2001 by
User:Stan Shebs Cycas revoluta - male
plant GNU
source: same
3 4
Gymnosperms and Angiosperms lines
separating now.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (318mybn)
4. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004). (350)
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
(mayfly?). 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
result of the collision of Europe and
eastern North America. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2
This group, the
Amniota, will branch into the 3 major
Classes: Reptiles (Sauropsida), Birds
(Aves), and Mammals (Synapsida).
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FO
OTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
mybn), end Carboniferous period
(354-290 mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
diapsids (crocodiles) separate.1
FOOTNO
TES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
Infradivision Actinopteri evolves.1
FOO
TNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
Infradivision Actinopteri, Gars
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
happens. 1 This is the most
devastating mass extinction event in
the history of earth.
FOOTNOTES
1. ^
http://io.uwinnipeg.ca/~simmons/16cm05/1
116/16macro.htm meteor impact in
antarctica:
MORE INFO
[1]
http://www.sciencedaily.com/releases/200
6/06/060601174729.htm
[2]
http://www.ia.ucsb.edu/pa/display.aspx?p
key=1073
[1] Timeloine of mass extinctions.
COPYRIGHTED Benjamin Cummings.
source: http://io.uwinnipeg.ca/~simmons/
16cm05/1116/16macro.htm
Era.1 2
FOOTNOTES
1. ^ The geological Society of America
ucmp.berkeley.edu
2. ^ Richard Cowen, "History of Life",
(Malden, MA: Blackwell, 2005).
mybn), end Permian period (290-248
mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
Neopterygii evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
Subdivision Halecomorphi, Bow fish
(Amiiformes) evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
was found in South America. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
FOOTNOTES
1. ^
http://www.abqtrib.com/albq/nw_science/a
rticle/0,2668,ALBQ_21236_4546322,00.html
FOOTNOTES
1. ^
http://www.dinodata.net/DNM/dallav.htm
2
herrings, anchovies, carp, minnows,
piranha, salmon, trout, pike, perch,
seahorse, cod) evolves.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
lizards evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FO
OTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2
evolve. 1
FOOTNOTES
1. ^ "Triconodonta". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Triconodont
a
2. ^
http://www.biodiversity.org.uk/scripts/j
ava/runjava.dll?java=BentonControlServer
&method=jsShowStrat&family=Sinoconodonti
dae
mybn), end Triassic period (248-206
mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
because of climate (temperature?,
weather?) changes. Large outpourings
of lava from break-up of Pangea may
have caused climate change. 1
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
(shark-like fishes) divides into 2
divisions Squalea (rays, skates) and
Galeomorphii (great white, hammerhead,
nurse, sand tiger sharks).1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2
evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
white, hammerhead, nurse, sand tiger
sharks) evolve.1
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FO
OTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
3
Chromalveolates) fossils.1 2
FOOTNOTES
1. ^ Kooistra, W. H. C. F. and Medlin,
L. K. (1996). Evolution of the diatoms
(Bacillariophyta) : IV. A
reconstruction of their age from small
subunit rRNA coding regions and the
fossil record. Mol. Phylogenet. Evol.
6, 391-407.
2. ^ "Diatom". Wikipedia. Wikipedia,
2008.
http://en.wikipedia.org/wiki/Diatom
3. ^ Kooistra, W. H. C. F. and Medlin,
L. K. (1996). Evolution of the diatoms
(Bacillariophyta) : IV. A
reconstruction of their age from small
subunit rRNA coding regions and the
fossil record. Mol. Phylogenet. Evol.
6, 391-407.
MORE INFO
[1] Round, F. E. and Crawford, R.
M. (1990). The Diatoms. Biology and
Morphology of the Genera, Cambridge
University Press, UK.
source: http://www.nature.com/news/2003/
030217/images/diatom_180.jpg
source: http://www.ucmp.berkeley.edu/chr
omista/diatoms/diatomdiverse.jpg
2
1 Monotremes lay eggs and are the
oldest warm blooded species of record.
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
4 5 6
ancient flowering plant (Angiosperm)
still alive, "Amborella" evolving now.1
2 3
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
3. ^ N Wikstrom,
V Savolainen, MW Chase, "Evolution of
the angiosperms: calibrating the family
tree", Proc Biol Sci. 2001 Nov
7;268(1482):2211-20., (2001).
4. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004). (175mybn)
5. ^ Hwan
Su Yoon, Jeremiah D. Hackett, Claudia
Ciniglia, Gabriele Pinto and Debashish,
"A Molecular Timeline for the Origin of
Photosynthetic Eukaryotes", Molecular
Biology and Evolution, (2004).
(c100mybn)
6. ^ N Wikstrom, V Savolainen, MW
Chase, "Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001). (175mybn)
MORE INFO
[1] "Fruit". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Fruit
[1] Photo of Amborella trichopoda
(Amborellaceae; photo © Sangtae Kim).
source: http://tolweb.org/tree?group=ang
iosperms
[2] none
source: http://www.ucsc.edu/currents/99-
00/08-30/amborella.photo2.htm
2
F
OOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTN
OTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
Archaeopteryx.1
FOOTNOTES
1. ^
http://www.toyen.uio.no/palmus/galleri/m
ontre/english/x499b.htm
MORE INFO
[1]
http://www.netpets.org/birds/newsroom/ar
chaeopteryx.html
[2]
http://www.palaeos.com/Vertebrates/Units
/350Aves/100.html#Archaeornithes
[1] Archaeopteryx siemensii HMN
1880/81 (Berlin) COPYRIGHTED EDU
source: http://www.oucom.ohiou.edu/dbms-
witmer/dinoskulls02.htm
[2] Archaeopteryx sp. JM 2257
(Eichstätt) COPYRIGHTED EDU
source: http://www.oucom.ohiou.edu/dbms-
witmer/dinoskulls02.htm
Unlike Archaeopteryx, Confuciusornis
had no teeth.
FOOTNOTES
1. ^
http://www.ucmp.berkeley.edu/diapsids/bi
rds/birdfr.html
[1] Confuciusornis
source: http://www.ucmp.berkeley.edu/dia
psids/birds/confuciusornislg.jpg
2
branch of mammals) evolve. 1
FOOTNOTES
1. ^ "Multituberculata". Wikipedia.
Wikipedia, 2008.
http://en.wikipedia.org/wiki/Multituberc
ulata
2. ^
http://www.biodiversity.org.uk/scripts/j
ava/runjava.dll?java=BentonControlServer
&method=jsShowStrat&family=Arginbaatarid
ae
FOOTNOTES
1. ^
http://www.uky.edu/KGS/education/timelin
e2.htm
2. ^
http://www.rgp.ufl.edu/publications/expl
ore/v04n1/fossil1.html
3. ^ Science November 27, 1998
[1] Archaefructus liaoningensis. The
leaf-like structures on the stem of
this 140 million year old fossil are
pods containing the seeds, a
characteristic unique to flowering
plants. Credit: University of Florida.
PD?
source: http://science.nasa.gov/headline
s/y2001/ast17apr_1.htm?list118443
[2] Archaefructus liaoningensis Sun,
Dilcher, Zheng et Zhou (Sun et al.,
1998). Fruiting axes and remains of two
subtending leaves (Photo courtesy of
David Dilcher). COPYRIGHTED EDU
source: http://www.flmnh.ufl.edu/deeptim
e/virtualfossilcollection/Archaeofructus
.html
mybn), end Jurassic period (206-144
mybn).1
FOOTNOTES
1. ^ The geological Society of America
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
1
FOOTNOTES
1. ^
http://www.palaeos.com/Vertebrates/Units
/350Aves/350.200.html (estimate from)
[1] Alvarezsaurid. COPYRIGHTED
source: http://www.palaeos.com/Vertebrat
es/Units/350Aves/350.200.html
1
evolve.
FOOTNOTES
1. ^
http://www.palaeos.com/Vertebrates/Units
/350Aves/350.500.html#Ornithothoraces
(estimate from)
[1] Iberomesornis
COPYRIGHTED, Iberomesornis
COPYRIGHTED
source: http://www.dinosauromorpha.de/th
eropoda/iberomesornis.JPG
source: http://www.lemanlake.com/photos/
biotope/biodiversite/iberomesornis.gif
1
evolve.
FOOTNOTES
1. ^
http://www.palaeos.com/Vertebrates/Units
/350Aves/350.500.html#Enantiornithes
(estimate from)
[1] Sinornis santensis Artist: James
Reece COPYRIGHTED AUSTRALIA
source: http://www.amonline.net.au/chine
se_dinosaurs/feathered_dinosaurs/photo07
.htm
1
FOOTNOTES
1. ^
http://www.palaeos.com/Vertebrates/Units
/350Aves/350.500.html#Ornithurae
(estimate from)
[1] fossil specimen of Chaoyangornis
COPYRIGHTED
source: http://www.sino-collector.com/en
g/_private/cjyd/zjlt/hjs-hs/pic-l/hs0016
.jpg
[2] Chaoyangia, modified from Hou et
al. (1996) COPYRIGHTED EDU
source: http://rainbow.ldeo.columbia.edu
/courses/v1001/clover16.html
1
evolve.
FOOTNOTES
1. ^
http://www.palaeos.com/Vertebrates/Units
/350Aves/350.500.html#Hesperornithiforme
s (estimate from)
[1] Hesperornis. COPYRIGHTED
source: http://www.savageancientseas.com
/images/labels/hesperornis.jpg
[2] Detail of a painting by Ely Kish,
Copyright © Ely Kish; used with
permission of Ely Kish (EMAIL)
Hesperornis regalis Hesperornis
(pronounced HES-per-OR-nis) means
''western bird''. Toothed marine birds
of the Late Cretaceous
seas COPYRIGHTED
source: http://www.oceansofkansas.com/He
sperornis/kish-01.jpg
2
FOOTNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
2
FOO
TNOTES
1. ^ Richard Dawkins, "The Ancestor's
Tale", (Boston, MA: Houghton Mifflin
Company, 2004).
2. ^ Richard Dawkins, "The
Ancestor's Tale", (Boston, MA: Houghton
Mifflin Company, 2004).
3 4
Angiosperm group "Monocotyledons"
(Monocots) evolving now. Monocots are
the second largest lineage of flowers
after the Eudicots, and include lilies,
palms, orchids, and grasses.1 2
FOOTNOT
ES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ N
Wikstrom, V Savolainen, MW Chase,
"Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001).
3. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
(128mybn)
4. ^ N Wikstrom, V Savolainen, MW
Chase, "Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001). (153mybn)
[1] Sweet Flag (Acorus calamus) -
spadix Spadix of Sweet Flag. usgs
public domain
source: http://en.wikipedia.org/wiki/Aco
rus
[2] Ivy Duckweed (Lemna
trisulca) Name Lemna
trisulca Family Lemnaceae
source: http://en.wikipedia.org/wiki/Ali
smatales
3 4
Angiosperm group Eudicots (includes
most former dicotyledons) evolving now.
Eudicots are the largest lineage of
flowers.1 2
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ N
Wikstrom, V Savolainen, MW Chase,
"Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001).
3. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
(128mybn)
4. ^ N Wikstrom, V Savolainen, MW
Chase, "Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001). (153mybn)
4 5
Angiosperm groups "Asterids" and
"Rosids" evolving and separating now.1
2 3
FOOTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ N
Wikstrom, V Savolainen, MW Chase,
"Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001).
3. ^ THE ANGIOSPERM PHYLOGENY GROUP*,
"An update of the Angiosperm Phylogeny
Group classification for the orders and
families of flowering plants: APG II",
Botanical Journal of the Linnean
Society Volume 141 Page 399 - April
2003 doi:10.1046/j.1095-8339, (2003).
4. ^
Jeffrey D. Palmer, Douglas E. Soltis
and Mark W. Chase, "The plant tree of
life: an overview and some points of
view", American Journal of Botany.
2004;91:1437-1445., (2004). (128mybn)
5. ^ N
Wikstrom, V Savolainen, MW Chase,
"Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001). (122mybn)
MORE INFO
[1] wiki
3 4
Angiosperm "Monocotyledon" (Monocot)
group "Commelinids" evolving now.1 2
FO
OTNOTES
1. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
2. ^ N
Wikstrom, V Savolainen, MW Chase,
"Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001).
3. ^ Jeffrey D. Palmer, Douglas E.
Soltis and Mark W. Chase, "The plant
tree of life: an overview and some
points of view", American Journal of
Botany. 2004;91:1437-1445., (2004).
(128mybn)
4. ^ N Wikstrom, V Savolainen, MW
Chase, "Evolution of the angiosperms:
calibrating the family tree", Proc Biol
Sci. 2001 Nov 7;268(1482):2211-20.,
(2001). (153my)
[1] Manila dwarf coconut palm from
http://www.ars.usda.gov/is/graphics/phot
os/ Manila dwarf coconut palm
thumbnail A Manila dwarf coconut palm
on the grounds of the Tropical
Agriculture Research Station in
Mayaguez, Puerto Rico. dept of
ag public domain
source: http://en.wikipedia.org/wiki/Are
cales
[2] coconut GOV public domain
source: http://www.nps.gov/kaho/KAHOckLs
/KAHOplnt/images/IMG_03957.jpg
5 6
Angiosperm "Core Eudicots" evolving
now.1 2 3 4
FOOTNOTES
1. ^ THE ANGIOSPERM PHYLOGENY GROUP*,
"An update of the Angiosperm Phylogeny
Group classification for the orders and
families of flowering plants: APG II",
Botanical Journal of the Linnean
Society Volume 141 Page 399 - April
2003 doi:10.1046/j.1095-8339, (2003).
2. ^ S.
Blair Hedges, "The Origin and Evolution
of Model Organisms", Nature Reviews
Genetics 3, 838-849;
doi:10.1038/nrg929, (2002).
3. ^ N Wikstrom, V
Savolainen, MW Chase, "Evolution of the
angiosperms: calibrating the family
tree", Proc Biol Sci. 2001 Nov
7;268(1482):2211-20., (2001).
4. ^ Jeffrey D.
Palmer, Douglas E. Soltis and Mark W.
Chase, "The plant tree of life: an
overview and some points of view",
American Journal of Botany.
2004;91:1437-1445., (2004).
5. ^ Jeffrey D.
Palme