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|Noun||1.||class Amphibia - the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians|
Craniata, subphylum Craniata, subphylum Vertebrata, Vertebrata - fishes; amphibians; reptiles; birds; mammals
amphibian - cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form
genus Hynerpeton, Hynerpeton - earliest fossil amphibian ever found; of the Devonian; found in Pennsylvania
genus Ichthyostega - second earliest fossil amphibian ever found; of the Devonian; found in Greenland
Anura, Batrachia, order Anura, order Batrachia, order Salientia, Salientia - frogs, toads, tree toads
Labyrinthodonta, Labyrinthodontia, superorder Labyrinthodonta, superorder Labyrinthodontia - extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic
order Stegocephalia, Stegocephalia - in former classifications a division of class Amphibia comprising all pre-Jurassic and some later extinct large salamandriform amphibia
class - (biology) a taxonomic group containing one or more orders
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