34'2 Hypothetical phylogeny of chordates

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34.2 Hypothetical phylogeny of chordates
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34.20. The origin of Tetrapods
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34.21 Amphibian orders Salamanders (top), frogs
(middle), and caecilians (bottom).
Costa Rica 2005 Field course
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34.22 Dual life of a frog (Rana temporaria)
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http//amphibiaweb.org/declines/declines.html
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34.2 Hypothetical phylogeny of chordates
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34.24 Amniotic egg
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Taxonomic classes of amniotes
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34.23. Phylogeny of amniotes. Extant groups
identified in red.
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A Tuatara
Sea turtle
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34.25 A hatching reptile (Komodo dragon)
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34.27 Extant reptiles (other than birds) Desert
tortoise (top left), lizard (top right), king
snake (bottom left), alligators (bottom right)
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Banded gecko, Coleonyx varigatus
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Emerald tree boa
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34.23. Phylogeny of amniotes. Extant groups
identified in red.
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34.30 A small sample of birds Blue-footed
boobies (top left), male peacock (top right),
penguins (bottom left), perching bird (bottom
right)
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Archaeopteryx
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34.29 Artist reconstruction of Archaeopteryx, a
Jurassic bird-reptile.(note many remaining
traits of non-bird reptiles)
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34.28 Form fits function the avian wing and
feather
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34.26 A bald eagle in flight
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Rhea Pantanal, Brazil
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34.2 Hypothetical phylogeny of chordates
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34.36 Hypothetical cladogram of mammals
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Australian monotremes and marsupials echidna
(top left), platypus (top right), marsupial mouse
(lower left), sugar glider (lower right)
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34.34. Australian marsupials
The opossum the only marsupial in North America.
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Figure 34.35 Evolutionary convergence of
marsupial and eutherian (placental) mammals
Convergent evolution Organisms, not closely
related, independently evolve similar traits as
they both adapt to similar environments
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Placental mamals
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34.38A phylogenetic tree of primates
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Prosimians Lemurs
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A capuchin, a New World monkey (left), and a
vervet, an Old World monkey (right)
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Apes Gibbon (top left), orangutan (top right),
gorilla (bottom left), chimpanzee (bottom right)
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34.41 A timeline for some hominid species
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