| Noun | 1. | amphibian genus - any genus of amphibiansgenus Ichthyostega - second earliest fossil amphibian ever found; of the Devonian; found in Greenland Ascaphus, genus Ascaphus - type genus of the Ascaphidae; in some classifications included in the family Leiopelmatidae genus Bufo - type genus of the Bufonidae; common toads of New and Old Worlds genus Xenopus, Xenopus - an African clawed frog; in some classifications made the type genus of a separate family Xenopodidae genus - (biology) taxonomic group containing one or more species | |