Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass †Triconodonta Osborn, 1888 see Order Triconodonta Osborn, 1888
         Family †Triconodontidae Marsh, 1887
           1 Genus †Dyskritodon Sigogneau-Russell, 1995
           2 Genus †Ichthyoconodon Sigogneau-Russell, 1995
           3 Subfamily †Triconodontinae Marsh, 1887
           4 Subfamily †Alticonodontinae Fox, 1976