Graomys griseoflavus
© Scott J. Steppan
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Cinnyris venustus
© 1997 Greg and Marybeth Dimijian
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Craniata
© Philippe Janvier
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Acanthostega gunnari
© 1995 Alfred Kamajian
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Andinomys edax
© Scott J. Steppan
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Platystacus cotylephorus
© 1995 John P. Friel
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Graomys griseoflavus
© Scott J. Steppan
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Acanthostega gunnari
© 1997 University Museum of Zoology, Cambridge
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Spea multiplicata
© 1995 David Cannatella
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Dendrobatidae
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Solenodonsaurus janenschi
© 2001 Michel Laurin
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Graomys griseoflavus
© Scott J. Steppan
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Neotomys ebriosus
© Scott J. Steppan
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Sooglossidae
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Euoplocephalus
© 1983 Brian Franczak
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Pongo pygmaeus
© 2001 California Academy of Sciences
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Aspredo aspredo
© 1995 John P. Friel
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Chinchillula sahamae
© Scott J. Steppan
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Tarbosaurus bataar
© 1996 Thomas R. Holtz, Jr.
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Ichthyostega
© 1997 University Museum of Zoology, Cambridge.
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Chiroptera
© Nancy B. Simmons
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Eohiodon woodruffi
© 1998 Guo-Qing Li and Mark V. H. Wilson
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Synapsida
© 1997 Michel Laurin
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Physalaemus kroyeri
© 1996 Adao Cardoso
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Molossus rufus
© 1998 Nancy B. Simmons
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Chinchillula sahamae
© Scott J. Steppan
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Gorgosaurus libratus
© 2000 Thomas R. Holtz, Jr.
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Synapsida
© 1997 Michel Laurin
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Temnospondyli
© 2000 Jean-Sébastien Steyer and Michel Laurin
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Phyllotis darwini
© Scott J. Steppan
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Pipa pipa
© 1995 David Cannatella
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Galenomys garleppi
© Scott J. Steppan
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Homo sapiens
© 1993 Ethan Michelson
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Rhinopomatoidea
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Tauraspis, Hoelaspis, Tremataspis, Zenaspis
© 1997 Philippe Janvier
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Astraspis desiderata
© 1997 Philippe Janvier
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Polycryptodira
© 1996 John Merck
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Hiodon tergisus
© 1998 Wayne E. Roberts
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Gastrophryne olivacea
© 1995 David Cannatella
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Polypedates
© 1995 David Cannatella
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