is a specific kind of: genus.

is a broader term that covers: genus Hynerpeton, Hynerpeton | genus Ichthyostega | genus Salamandra, Salamandra | genus Triturus, Triturus | genus Notophthalmus, Notophthalmus | genus Taricha, Taricha | Ambystoma, genus Ambystoma | Cryptobranchus, genus Cryptobranchus | genus Megalobatrachus, Megalobatrachus | family Proteidae, Proteidae | genus Proteus, Proteus | genus Necturus, Necturus | genus Dicamptodon | genus Rhyacotriton, Rhyacotriton | genus Plethodon, Plethodon | Desmograthus, genus Desmograthus | Aneides, genus Aneides | Batrachoseps, genus Batrachoseps | genus Hydromantes, Hydromantes | genus Amphiuma | genus Siren | genus Rana, Rana | Eleutherodactylus, genus Eleutherodactylus | genus Hylactophryne, Hylactophryne | genus Leptodactylus, Leptodactylus | genus Polypedates, Polypedates | Ascaphus, genus Ascaphus | genus Leiopelma, genus Liopelma, Leiopelma, Liopelma | genus Bufo | Alytes, genus Alytes | Bombina, genus Bombina | genus Scaphiopus, Scaphiopus | genus Hyla, Hyla | Acris, genus Acris | genus Pseudacris, Pseudacris | genus Pternohyla, Pternohyla | Gastrophryne, genus Gastrophryne | genus Hypopachus, Hypopachus | genus Pipa, Pipa | genus Xenopus, Xenopus ... show more.

is a member of: Craniata, subphylum Craniata, subphylum Vertebrata, Vertebrata.