Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Anapsida Osborn, 1903 - anapsids
               Order †Captorhinida
                 Suborder †Pareiasauroidea Nopsca, 1928 see Suborder Pareiasauria Seeley, 1888
                   Family †Pareiasauridae Cope, 1896
                     Genus †Parasaurus Marsh, 1893