noun
Amphibia; class of amphibians
Scientific taxonomic term for the class comprising all extant and extinct amphibians. Used in biology and zoology contexts.
両生綱にはカエルやサンショウウオが含まれる。
The class Amphibia includes frogs and salamanders.
From 両生 (ryōsei, 'amphibious') + 綱 (kō, 'class' in biological taxonomy). The term follows standard scientific naming conventions for taxonomic ranks.