Mammaliaformes Rowe 1988 [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 †Gondwanatheria Mones, 1987 - gondwanatherians see Order Gondwanatheria Mones, 1987 Family †Sudamericidae Scillato-Yané & Pascual, 1984 Genus †Gondwanatherium Bonaparte, 1986