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Allantoidea :: Allantoidea (n. pl.) The division of Vertebrata in which the embryo develops an allantois. It includes reptiles, birds, and mammals..

Teleosaur :: Teleosaur (n.) Any one of several species of fossil suarians belonging to Teleosaurus and allied genera. These reptiles are related to the crocodiles, but have biconcave vertebrae..

Podotheca :: Podotheca (n.) The scaly covering of the foot of a bird or reptile.

Pterosauria :: Pterosauria (n. pl.) An extinct order of flying reptiles of the Mesozoic age; the pterodactyls; -- called also Pterodactyli, and Ornithosauria..

Ichthyosaurus :: Ichthyosaurus (n.) An extinct genus of marine reptiles; -- so named from their short, biconcave vertebrae, resembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oolitic, and Cretaceous formations..

Loricate :: Loricate (n.) An animal covered with bony scales, as crocodiles among reptiles, and the pangolins among mammals..

Septomaxillary :: Septomaxillary (n.) A small bone between the nasal septum and the maxilla in many reptiles and amphibians.

Lepidosauria :: Lepidosauria (n. pl.) A division of reptiles, including the serpents and lizards; the Plagiotremata..

Ornithosauria :: Ornithosauria (n. pl.) An order of extinct flying reptiles; -- called also Pterosauria.

Metachrosis :: Metachrosis (n.) The power og changing color at will by the expansion of special pigment cells, under nerve influence, as seen in many reptiles, fishes, etc..

Crocodilia :: Crocodilia (n. pl.) An order of reptiles including the crocodiles, gavials, alligators, and many extinct kinds..

Monocondyla :: Monocondyla (n. pl.) A group of vertebrates, including the birds and reptiles, or those that have only one occipital condyle; the Sauropsida..

Herpetologist :: Herpetologist (n.) One versed in herpetology, or the natural history of reptiles..

Plesiosaurus :: Plesiosaurus (n.) A genus of large extinct marine reptiles, having a very long neck, a small head, and paddles for swimming. It lived in the Mesozoic age..

Phaneroglossal :: Phaneroglossal (a.) Having a conspicious tongue; -- said of certain reptiles and insects.

Cheirotherium :: Cheirotherium (n.) A genus of extinct animals, so named from fossil footprints rudely resembling impressions of the human hand, and believed to have been made by labyrinthodont reptiles. See Illustration in Appendix..

Scale :: Scale (n.) One of the small, thin, membranous, bony or horny pieces which form the covering of many fishes and reptiles, and some mammals, belonging to the dermal part of the skeleton, or dermoskeleton. See Cycloid, Ctenoid, and Ganoid..

Sauropsida :: Sauropsida (n. pl.) A comprehensive group of vertebrates, comprising the reptiles and birds..

Precoracoid :: Precoracoid (n.) The anterior part of the coracoid (often closely united with the clavicle) in the shoulder girdle of many reptiles and amphibians.

Lore :: Lore (n.) The space between the eye and bill, in birds, and the corresponding region in reptiles and fishes..

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