amphibian genus vs genus Plethodon

Other hyponyms of amphibian genus include 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, 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.