[Class] Amphibia Gray, 1825
   1 Subclass †Aistopodomorpha Kuhn, 1972 [monotypic] see Order Aïstopoda
   2 Subclass †Microsauromorpha Kuhn, 1972 [monotypic] see Order Microsauria Dawson, 1863
   3 Subclass †Nectrideomorpha Kuhn, 1972 [monotypic] see Order Nectridea Miall, 1875
   4 Subclass †Lysorophiamorpha Kuhn, 1972 [monotypic] see Order Lysorophia
   5 Subclass Caeciliomorpha Kuhn, 1968 [monotypic] see Order Gymnophiona Rafinesque, 1814
   6 Subclass Urodelomorpha Säve-Söderbergh, 1934 [monotypic] see Order Urodela Dumeril, 1806
   7 Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758
   8 Subclass Anuromorpha Kuhn, 1959
   9 Subclass †Mixamphibiomorpha Kuhn, 1972 [monotypic]