Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988] Clade Epicynodonts Hopson & Kitching 2001 Clade Eucynodontia Kemp 1982 [Rowe 1993] Clade Mammaliamorpha Rowe 1988 Family †tritheledontids Broom Genus †Pachygenelus Watson, 1913