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
       [Order] †Alphadontia Archer, 1984
         [Suborder] †Hatcheriformes Case, Goin & Woodburne, 2005
           Family †Caroloameghiniidae Ameghino, 1901
             1 Genus †Procaroloameghinia Marshall, 1982
             2.1 Genus †Caroloameghinia Ameghino, 1901
             2.2 Genus †Canchadelphys Goin, Abello & Chornogubsky, 2010