Pteronotus parnellii
© 1997 Nancy B. Simmons
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Eutheria
© Nancy B. Simmons
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Iguania
© 1996 Kevin de Queiroz and Emilia P. Martins
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Rana bedriagae
© 1995 Peter Beerli
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Myobatrachinae
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Eriptychiida
© Smithsonian Institution Press
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Amphiumidae
© 1996 J. Robert Macey
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Sacabambaspis janvieri
© Philippe Janvier
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Lobianchia gemellarii
© Sears Foundation for Marine Research, Yale University
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Sigmodontinae
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Eohiodon rosei
© 1998 Guo-Qing Li and Mark V. H. Wilson
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© 1996 Michel Laurin
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Gorilla gorilla gorilla
© 2001 California Academy of Sciences
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Neoscopelidae
© Melanie L.J. Stiassny
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Edmontonia
© 2000 Kenneth Carpenter
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Physalaemus gracilis
© 1996 Adao Cardoso
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Rana shqiperica
© 1995 Hansjürg Hotz
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Temnospondyli
© 2000 Jean-Sébastien Steyer and Michel Laurin
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Pelobatidae
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Discosauriscus austriacus
© Jozef Klembara
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Phyllotis darwini
© 1996 Scott J. Steppan
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Sorex obscurus (Soricidae)
© 1999 California Academy of Sciences
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Tursiops truncatus
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Plethodon dorsalis
© 1996 Dr. Robert S. Simmons
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Centrolenidae
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Cercopithecus aethiops
© 2000 Greg and Marybeth Dimijian
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Diapsida
© 2000 Michel Laurin
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Acanthostega gunnari
© 1997 Eliot Goldfinger
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Marmota flaviventris
© 2000 Scott J. Steppan
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Temnospondyli
© 2000 Jean-Sébastien Steyer and Michel Laurin
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Andinomys edax
© Scott J. Steppan
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Heterostraci
© Philippe Janvier
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Hylaeosaurus
© 2000 Kenneth Carpenter
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Saimiri oerstedi
© 2000 Greg and Marybeth Dimijian
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Neotomys ebriosus
© Scott J. Steppan
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Western Palearctic water frogs
© Peter Beerli
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Irenomys tarsalis
© Scott J. Steppan
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Rana cerigensis
© Peter Beerli
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Pipidae
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Ichthyostega
© 1997 University Museum of Zoology, Cambridge
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