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Amphibians are ectothermic, tetrapod vertebrates o the class Amphibia (Greek ἀμφí, amphi, "both" + βíος, bios, "life"). Thay inhabit a wide variety o habitats wi maist species livin within terrestrial, fossorial, arboreal or freshwatter aquatic ecoseestems.

Amphibians
Temporal range: Late Devonianpresent, 370–0 Ma
Collage o amphibians
Clockwise frae tap right: Seymouria, Mexican burraein caecilian, eastren newt an leaf green tree frog
Scientific classification e
Kinrick: Animalia
Phylum: Chordata
Supercless: Tetrapoda
Cless: Amphibia
Gray 1825[1]
Subclasses
Warld's smawest vertebrate
The warld's smawest kent vertebrate, Paedophryne amauensis, sittin on a U.S. dime, 17.9 mm, for scale

ReferencesEedit