Phylum [Vertebrata] (Lamarck, 1801)
   Class Reptilia Linnaeus, 1758 - reptiles
     Subclass Anapsida Osborn, 1903 - anapsids
       Order †Captorhinida
         1 Family †Protorothyrididae Price, 1937
         2 Family †Captorhinidae Case, 1911
         3 Family †Procolophonidae Lydekker, 1889
         4 Family †Pareiasauridae Cope, 1896
         5 Family †Millerettidae Romer, 1956 - millerettids