Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Class Amphibia Gray, 1825 [paraphyletic]
           Subclass †Lepospondyli Zittel, 1888 see Superorder Lepospondyli Zittel, 1887
             Order †Microsauria Dawson, 1863
               Suborder †Tuditanomorpha Carroll & Gaskill, 1978
                 1 Family †Tuditanidae Cope, 1875
                 2 Family †Hapsidopareiontidae Daly, 1973, nom. illeg.
                 3 Family †Pantylidae Case, 1911
                 4 Family †Gymnarthridae Case, 1910
                 5 Family †Ostodolepididae
                 6 Family †Trihecatontidae Vaughn, 1972
                 7 Family †Goniorhynchidae Carroll & Gaskill, 1978