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A suborder of Theromorpha, including terrestrial reptiles from the Permian formation.

Having a conspicious tongue; -- said of certain reptiles and insects.

of the choroid and iris, or the pigmented connective tissue cells in the skin of fishes, reptiles, etc.

An extinct order of Mesozoic marine reptiles including the genera Plesiosaurus, and allied forms; -- called also Sauropterygia.

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.

An extinct genus of marine reptiles allied to Plesiosaurus, but having a much shorter neck.

The scaly covering of the foot of a bird or reptile.

Situated behind the orbit; as, the postorbital scales of some fishes and reptiles. -- n.

t of the coracoid (often closely united with the clavicle) in the shoulder girdle of many reptiles and amphibians.

ectethmoid, as a certain bone in the nasal capsule of many animals, and certain scales of reptiles and fishes. -- n.

One of the scales just in front of the eye of a reptile or fish.

A vertebral rudiment in front of the atlas in some reptiles.

A reptile having procoelian vertebræ; one of the Procoelia.

An extinct genus of reptiles of the Permian period. Called also Protosaurus.

An extinct flying reptile; one of the Pterosauria. See Illustration in Appendix.

An extinct order of flying reptiles of the Mesozoic age; the pterodactyls; -- called also Pterodactyli, and Ornithosauria.

between the base of the lower jaw and the skull in most vertebrates below the mammals. In reptiles and birds it articulates the lower jaw with the skull; in mammals it is represented by the malleus or incus.

An animal having four feet, as most mammals and reptiles; -- often restricted to the mammals.

Creeping; crawling; -- said of reptiles, worms, etc.

Belonging to the reptiles. Reptilian age (Geol.), that part of geological time comprising the Triassic, Jurassic, and Cretaceous periods, and distinguished as that era in which the class of reptiles attained its highest expansion; -- called also the Secondary or Mezozoic age.