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 †Millerosauroidea [monotypic] see Order Millerosauria Watson, 1957
                   Family †Millerettidae Romer, 1956 - millerettids
                     1 Genus †Broomia Watson, 1914
                     2 ?Genus †Heleophilus Broom, 1909
                     3 Genus †Milleretta Broom, 1948
                     4 Genus †Milleretoides Langston, 1952, nom. inval. see Genus Millerettoides Broom, 1948
                     5 Genus †Millerettops Broom, 1948
                     6 Genus †Milleropsis Gow, 1972
                     7 Genus †Millerosaurus Broom, 1948
                     8 Genus †Nanomilleretta Broom & Robinson, 1948, nom. dub.