Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988]
   Clade Epicynodonts Hopson & Kitching 2001
     Clade Eucynodontia Kemp 1982 [Rowe 1993]
       1 Genus †Cynognathus Seeley, 1895
       2.1 Genus †Probelesodon Romer, 1969
       2.2.1 Genus †Probainognathus Romer, 1970
       2.2.2 Clade Mammaliamorpha Rowe 1988