Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Clade Mammalia Linnaeus 1758 [Rowe 2020] Metatheria Huxley 1880 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Infraclass Metatheria Huxley, 1880 Marsupialiformes Vullo, Gheerbrant, de Muizon & Néraudeau, 2009 Genus †Asiatherium Trofimov & Szalay, 1994