Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Metatheria Huxley, 1880 see Infraclass Metatheria Huxley, 1880
                 Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
                   Family Didelphidae Gray, 1821 - American opossums
                     1 Genus Caluromys Allen, 1900 - woolly opossums
                     2 Genus Monodelphis Burnett, 1830 - short-tailed opossums
                     3 Genus Glironia Thomas, 1912 - bushy-tailed opossums
                     4 Genus Marmosa Gray, 1821 - murine opossums
                     5 Genus Metachirops Matschie, 1916 see Genus Philander Brisson, 1762
                     6 Genus Metachirus Burmeister, 1854 - brown "four-eyed" opossum
                     7 Genus Lutreolina Thomas, 1910 - thick-tailed opossum
                     8 Genus Chironectes Illiger, 1811 - yapok
                     9 Genus Didelphis Linnaeus, 1758 - large American opossums