Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Cynodontia Owen 1861 [Rowe 2020]
Count: [*†*] 1c;5o;2f; †14o;25f;96g
   Clade Epicynodonts Hopson & Kitching 2001
  Count: [*†*] 1c;5o;2f; †14o;25f;94g
     Clade Eucynodontia Kemp 1982 [Rowe 1993]
    Count: [*†*] 1c;5o;2f; †14o;23f;93g
       Clade Mammaliamorpha Rowe 1988, nom. cl. inval. see Clade Mammaliamorpha Rowe 1988 [Rowe 2020]
      Count: [*†*] 1c;5o;2f; †14o;23f;90g
         Family †tritheledontids Broom
        Count: [†*] †1g
           1 Genus †Pachygenelus Watson, 1913
          Count: -