Class Reptilia Linnaeus, 1758 - reptiles
   Subclass †Synapsida Osborn, 1903 - synapsids see Class Synapsida Osborn, 1903
     Order †Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905
       1 Suborder †Theriodontia Owen, 1876 [paraphyletic]
       2 Suborder †Dinocephalia Seeley, 1894 see [unranked] Dinocephalia Seeley, 1894
       3 Suborder †Anomodontia Owen, 1859