Class Mammalia Linnaeus, 1758 - mammals
   Order Didelphimorphia Gill, 1872
     Family Didelphidae Gray, 1821 - American opossums
       Subfamily Didelphinae Gray, 1821
         01 Genus Chironectes Illiger, 1811 - yapok
         02 Genus Didelphis Linnaeus, 1758 - large American opossums
         03 Genus Gracilinanus Gardner & Creighton, 1989
         04 Genus Lestodelphys Tate, 1934 - Patagonian opossum
         05 Genus Lutreolina Thomas, 1910 - thick-tailed opossum
         06 Genus Marmosa Gray, 1821 - murine opossums
         07 Genus Marmosops Matschie, 1916
         08 Genus Metachirus Burmeister, 1854 - brown "four-eyed" opossum
         09 Genus Micoureus Lesson, 1842
         10 Genus Monodelphis Burnett, 1830 - short-tailed opossums
         11 Genus Philander Brisson, 1762 - gray and black "four-eyed" opossums
         12 Genus Thylamys Gray, 1843