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
Notometatheria Kirsch, Lapointe & Springer 1997
Marsupialia Jameson 1818 [O'Leary, Allard, Novacek, Meng & Gatesy 2004]
see Cohort Marsupialia Jameson, 1818
[Order] Paucituberculata Ameghino, 1894
Genus Caenolestes Thomas, 1895 - common "shrew" opossums