Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Didelphimorphia Gill, 1872
       Family Didelphidae Gray, 1821 - American opossums
         Subfamily Didelphinae Gray, 1821
           Genus Didelphis Linnaeus, 1758 - large American opossums
             1 Didelphis albiventris Lund, 1840 - white-eared opossum
             2 Didelphis aurita (Wied-Neuwied, 1826) - big-eared opossum
             3 Didelphis imperfecta Mondolfi & Pérez-Hernández, 1984 - Guianan white-eared opossum
             4 Didelphis marsupialis Linnaeus, 1758 - common opossum
             5 Didelphis pernigra Allen, 1900 - Andean white-eared opossum
             6 Didelphis virginiana Kerr, 1792 - Virginia opossum