Amphibian

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Subclass Labyrinthodontia - extinct

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Subclass Lepospondyli - extinct

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Subclass Lissamphibia

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  Anura

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  Caudata

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  Gymnophiona

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Amphibians (class Amphibia) are a taxon of animals that include all tetrapods (four-legged vertebrates) that do not have amniotic eggs. Amphibians (from Greek amphis "both" and bios "life") generally spend part of their time on land, but they do not have the adaptations to an entirely terrestrial existence found in most other modern tetrapods (amniotes). There are about 5,700 living species of amphibians.

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The study of Amphibians and Reptiles is known as herpetology (Greek herpeton = to ramp and logos = word). The fear of Amphibians and Reptiles is known as herpetophobia (phobia = fear).

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Animal: :For the Muppet Show character, see Animal (Muppet). For the professional wrestler, see Joseph Laurinaitis....

Greek: The noun Greek refers to:...