Mammaliaformes Rowe 1988
Count: [g†g] 1c;24o;125f;1081g; ‡1o;6f;43g; †24o;301f;4057g;1s
   [crown] Class Mammalia Linnaeus, 1758 - mammals
  Count: [g†g] 24o;125f;1081g; ‡1o;6f;43g; †21o;294f;4034g;1s
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
    Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †21o;294f;4031g;1s
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
      Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †20o;277f;3936g;1s
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
        Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †20o;274f;3932g
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
          Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †18o;269f;3910g
             Sublegion †Dryolestoidea Butler, 1939 see Superorder Dryolestoidea Butler, 1939
            Count: [†g] †2o;7f;26g
               1 Order †Dryolestida Prothero, 1981
              Count: [†g] †6f;25g
               2 Order †Amphitheriida Prothero, 1981
              Count: [†g] †1f;1g