Mammaliaformes Rowe 1988, nom. cl. inval. see Clade Mammaliaformes Rowe 1988 [Rowe 2020]
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass †Allotheria Marsh, 1880 see Clade Allotheria Marsh 1880
         Order †Multituberculata Cope, 1884
           Suborder †Cimolodonta McKenna, 1975
             Superfamily †Taeniolabidoidea Granger & Simpson, 1929
               Family †Eucosmodontidae Jepsen, 1940
                 1 Subfamily †Microcosmodontinae Holtzman & Wolberg, 1977 see Family Microcosmodontidae Holtzman & Wolberg, 1977
                 2 Subfamily †Eucosmodontinae Jepsen, 1940 see Family Eucosmodontidae Jepsen, 1940