Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Metatheria Huxley 1880 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Infraclass Metatheria Huxley, 1880
     Marsupialiformes Vullo, Gheerbrant, de Muizon & Néraudeau, 2009
       Order †Archimetatheria Szalay, 1994
         Superfamily †Pediomyoidea Simpson, 1927
           Family †Aquiladelphidae Davis, 2007
             1 Genus †Aquiladelphis Fox, 1971
             2 Genus †Apistodon Davis, 2007