Class Mammalia Linnaeus, 1758 - mammals
   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 marsupialis Linnaeus, 1758 - common opossum
           4 Didelphis virginiana Kerr, 1792 - Virginia opossum