Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Goodrich, 1930
         Amniota Haeckel, 1866 - amniotes
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Laurin 1991]
               Infraclass Lepidosauromorpha Benton, 1983 see Subclass Lepidosauromorpha Benton, 1983
                 Order †Eosuchia Broom, 1914 see Clade Eosuchia Broom 1914 [Laurin 1991]
                   1 Family †Acerosodontosauridae
                   2 Family †Younginidae Broom, 1914
                   3 Family †Tangasauridae Haughton, 1924
                   4 Family †Galesphyridae Currie, 1981