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] †Sparassodonta Ameghino, 1894
         1 †"Varalphadon" janetae Carneiro, 2018
         2.1 Genus †Varalphadon Johanson, 1996
         2.2.1 Genus †Allqokirus Marshall & de Muizon, 1988
         2.2.2.1 Genus †Patene Simpson, 1935
         2.2.2.2.1 Genus †Nemolestes Ameghino, 1902
         2.2.2.2.2.1 Family †Hondadelphyidae Marshall, Case & Woodburne, 1990 [monotypic]
         2.2.2.2.2.2.1 Family †Hathliacynidae Ameghino, 1894
         2.2.2.2.2.2.2 Superfamily ‡Borhyaenoidea Ameghino, 1894