English > class Amphibia: 1 sense > noun 1, animal| Meaning | The class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians. |
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| Synonym | amphibia |
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| Member of | Vertebrata, subphylum Vertebrata, Craniata, subphylum Craniata | fishes |
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| Members | Gymnophiona, order Gymnophiona | An order of amphibians including caecilians |
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| Hynerpeton, genus Hynerpeton | Earliest fossil amphibian ever found |
| Labyrinthodontia, superorder Labyrinthodontia, Labyrinthodonta, superorder Labyrinthodonta | Extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth |
| Salientia, order Salientia, Anura, order Anura, Batrachia, order Batrachia | frogs, toads, tree toads |
| Stegocephalia, order Stegocephalia | In former classifications a division of class Amphibia comprising all pre-Jurassic and some later extinct large salamandriform amphibia |
| Urodella, order Urodella, Caudata, order Caudata | salamanders |
| amphibian | cold-blooded vertebrate typically living on land but breeding in water |
| genus Ichthyostega | Second earliest fossil amphibian ever found |
| tadpole, polliwog, pollywog | A larval frog or toad |
| Broader | class | (biology) a taxonomic group containing one or more orders |
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| Spanish | anfibios |
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