Mammaliaformes Rowe 1988
[crown] Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval.
see Class Mammalia Linnaeus, 1758
Theriimorpha Rowe 1993
[crown] Theria Parker & Haswell 1897 [McKenna 1975]
see Subclass Theria Parker & Haswell, 1897
Metatheria Huxley 1880 [O'Leary, Allard, Novacek, Meng & Gatesy 2004]
see Infraclass Metatheria Huxley, 1880
[crown] Marsupialia Jameson 1818 [O'Leary, Allard, Novacek, Meng & Gatesy 2004]
see Cohort Marsupialia Jameson, 1818
Didelphimorphia Gill 1872
see Order Didelphimorphia Gill, 1872
Genus Didelphis Linnaeus, 1758 - large American opossums
Didelphis virginiana Kerr, 1792 - Virginia opossum