Class Mammalia Linnaeus, 1758 - mammals
   Suborder †Gondwanatheria Mones, 1987, incertae sedis - gondwanatherians see Order Gondwanatheria Mones, 1987
     Family †Sudamericidae Scillato-Yané & Pascual, 1984
       1 Genus †Sudamericaᵀ Scillato-Yané & Pascual, 1984
       2 Genus †Gondwanatherium Bonaparte, 1986 [monotypic]
       3 Genus †Lavanify Krause, Prasad, von Königswald, Sahni & Grine, 1997 [monotypic]