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 †Captorhinomorpha Watson, 1917
                   1 Family †Protorothyrididae Price, 1937
                   2 Family †Captorhinidae Case, 1911
                   3 Family †Bolosauridae Cope, 1878 - bolosaurids
                   4 ?Family †Batropetidae Carroll, 1988
                   5 Family †Acleistorhinidae Daly, 1969