Chordata Images

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Brown pelican Pelecanus occidentalis Black skimmer Rynchops niger Blue-winged Teal Anas discors Black-billed magpie Pica pica
Numenius tahitiensis American bison Bison bison Bald eagle chicks Haliaeetus leucocephalus Bald eagle draws wings back as it comes into the nest for a landing Haliaeetus leucocephalus
Atlantic Puffin Fratercula arctica Vulpes lagopus American tree sparrow Spizella arborea American dipper Cinclus mexicanus
Altamira oriole Icterus gularis Chris rocks Homo Sapiens © 2004 Danny Mandel Strigidae © 2003 Wendy Burroughs AmphibiaWeb logo Living Amphibians © AmphibiaWeb
Relationships between Artiodactyla, Cetacea, and Mesonychia based on morphological data. Eutheria Rhodocetus kasrani © 2001 American Association for the Advancement of Science In the giant sperm whale, the nasal passages remain discrete tubes until just proximal to the single s-shaped blowhole. Physeteridae (giant sperm whale) © 1989 John E. Heyning Cetacea © 1995 Michel C. Milinkovitch
Baleen whales have two blowholes. Eubalaena glacialis © 1993 Michel C. Milinkovitch Toothed whales have a single blowhole Stenella coeruleoalba © 1991 Michel C. Milinkovitch Mantella madagascariensis Mantella madagascariensis © Greg and Marybeth Dimijian Golden Toads, Bufo periglenes, in amplexus Bufo periglenes © 1989 Greg and Marybeth Dimijian
Yanbiania wangqingica fossil Yanbiania wangqingica © 1998 Guo-Qing Li and Mark V. H. Wilson Hiodon tergisus Hiodon tergisus © 1998 Wayne E. Roberts Antennarius maculatus (Desjardins) © Theodore W. Pietsch Serpentes © 1996 Michel Laurin
Calomys laucha © Scott J. Steppan Eptatretus, Myxinikela © 1997 Philippe Janvier Cryptobranchus alleghaniensis © 1996 Dr. Eric J. Routman Ranitomeya reticulata © 1995 David Cannatella
Rhinolophidae Acanthostega gunnari © 1997 Richard Hammond skull of Tyrannosaurus rex Tyrannosaurus rex © 1993 Michael K. Brett-Surman Selene vomer © 1995 Tierney Thys
Eumops auripendulous © 1998 Nancy Simmons Doryaspis nathorsti © Philippe Janvier Shoulder girdle of Panoplosaurus Panoplosaurus © 2000 Kenneth Carpenter Auliscomys pictus © Scott J. Steppan
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