Phylum [Vertebrata] (Lamarck, 1801)
   Class Reptilia Linnaeus, 1758 - reptiles
     Subclass †Synapsida Osborn, 1903 - synapsids see Class Synapsida Osborn, 1903
       Order †Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905
         Suborder †Cynodontia Owen, 1861 - cynodonts see Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988]
           1 Family †Procynosuchidae Broom, 1937
           2 Family †Galesauridae Lydekker, 1890
           3 Family †Cynognathidae Seeley, 1895
           4 Family †Traversodontidae Huene, 1936
           5 Family †Tritylodontidae Cope