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
             Clade Cladotheria McKenna 1975
               Superorder †Dryolestoidea Butler, 1939 [monotypic]
                 Order †Dryolestida Prothero, 1981
                   1 Family †Dryolestidae Marsh, 1879
                   2 Family †Paurodontidae Marsh, 1887
                   3 Family †Donodontidae Sigogneau-Russell, 1991, sedis mutabilis [monotypic]
                   4 Family †Mesungulatidae Bonaparte, 1986, sedis mutabilis [monotypic]
                   5 Family †Brandoniidae Bonaparte, 1992, sedis mutabilis