After Carroll, 1988

<==o †Tapinocephalia
   |?- †Dimacrodon
   |?- †Driveria
   |?- †Mastersonia
   `--o †Tapinocephalidae
      |-- †Tapinocanius pamelae Rubidge, 1991 [Tapinocaninae]
      `--o Tapinocephalinae
         |-- †Avenantia
         |--o †Delphinognathus
         |  `-- †D. conocephalus
         |-- †Keratocephalus
         |-- †Mormosaurus
         |-- †Moschosaurus
         |-- †Phocosaurus
         |-- †Riebeeckosaurus
         |-- †Struthiocephaloides
         |-- †Struthiocephalus kitchingi
         |-- †Struthionops
         |?- †Styracocephalus Haughton, 1929 [treated as biarmosuchian by Sigogneau-Russell (1989)]
         |-- †Tapinocephalus atherstonei
         |-- †Taurocephalus lerouxi
         `-- †Moschops capensis [Agnosaurus, Moschognathus whaitsi, Moschoides, Pnigalion, Ulemosaurus]

Reference(s):

Special thanks to:

Jos H. M. Dols, for gathering additional information and species.