Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988]
   Clade Epicynodonts Hopson & Kitching 2001
     Clade Eucynodontia Kemp 1982 [Rowe 1993]
       Clade Mammaliamorpha Rowe 1988
         Class Mammalia Linnaeus, 1758 - mammals
           Clade Trechnotheria McKenna 1975
             Family †Spalacotheriidae Marsh, 1887
               1 Genus †Spalacotherium Owen, 1854, incertae sedis
               2 Genus †Zhangheotherium Hu et al., 1997, incertae sedis
               3 Subfamily †Spalacolestinae Cifelli & Madsen, 1999