Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Class Amphibia Gray, 1825 [paraphyletic]
           Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758
             Order †Temnospondyli Zittel, 1888 - temnospondyls
               Superfamily †Plagiosauroidea Abel, 1919 [monotypic]
                 1 Family †Plagiosauridae Abel, 1919