Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Class Amphibia Gray, 1825 [paraphyletic]
           modern amphibian orders
             ?Order †Proanura Romer, 1945 [monotypic]
               Family †Protobatrachidae Romer, 1945, nom. illeg. see Family Triadobatrachidae Kuhn, 1962