Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Cynodontia Owen 1861 [Rowe 2020] Clade Epicynodonts Hopson & Kitching 2001 Family †Thrinaxodontidae Watson & Romer, 1956 1 Genus †Thrinaxodon Seeley, 1894