scaly reptile
Quick Summary
Reptiles are air-breathing vertebrates characterized by epidermal scales covering their bodies. These scales are primarily composed of keratin and provide protection. Reptiles have a single occipital condyle where the skull attaches to the first vertebra. They reproduce through internal fertilization, and their embryos develop within an amnion, often enclosed in shelled eggs. Major living groups include turtles, tuatara, lizards, snakes, and crocodiles. While birds share a common ancestor with crocodiles, they are typically classified separately.12345
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reptileAnnotated classificationOrder Squamata (squamates) Lizards, snakes, and amphisbaenians. Upper Jurassic to present. Two suborders. Parietals fused; Jacobson’s organ with a fungiform projection and separate from nasal cavity, opening only into mouth cavity; paired functional hemipenes. Assorted References
Read MoreOrder Squamata (squamates) Lizards, snakes, and amphisbaenians. Upper Jurassic to present. Two suborders. Parietals fused; Jacobson’s organ with a fungiform projection and separate from nasal cavity, opening only into mouth cavity; paired functional hemipenes. Assorted References
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lizard…reptiles belonging in the order Squamata (which also includes snakes, suborder Serpentes). Lizards are scaly-skinned reptiles that are usually distinguished from snakes by the possession of legs, movable eyelids, and external ear openings. However, some traditional (that is, non-snake) lizards lack one or more of these features. For example, limb…
Read More…reptiles belonging in the order Squamata (which also includes snakes, suborder Serpentes). Lizards are scaly-skinned reptiles that are usually distinguished from snakes by the possession of legs, movable eyelids, and external ear openings. However, some traditional (that is, non-snake) lizards lack one or more of these features. For example, limb…
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