Class Mammalia Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Didelphidae Gray, 1821 - American opossums
       Genus Monodelphis Burnett, 1830 - short-tailed opossums
         Subgenus Monodelphis Burnett, 1830
           01 Monodelphis brevicaudata (Erxleben, 1777) - northern red-sided opossum
           02 Monodelphis orinoci Thomas, 1899 see Monodelphis brevicaudata (Erxleben, 1777)
           03 Monodelphis adusta (Thomas, 1897) - sepia short-tailed opossum
           04 Monodelphis osgoodi Doutt, 1938 - Osgood's short-tailed opossum
           05 Monodelphis kunsi Pine, 1975 - pygmy short-tailed opossum
           06 Monodelphis domestica (Wagner, 1842) - gray short-tailed opossum
           07 Monodelphis maraxina Thomas, 1923 - Marajó short-tailed opossum
           08 Monodelphis americana (Müller, 1776) - northern three-striped opossum
           09 Monodelphis sorex (Hensel, 1872) - southern red-sided opossum
           10 Monodelphis emiliae (Thomas, 1912) - Emilia's short-tailed opossum
           11 Monodelphis iheringi (Thomas, 1888) - Ihering's three-striped opossum
           12 Monodelphis theresa Thomas, 1921 - southern three-striped opossum
           13 Monodelphis unistriata (Wagner, 1842) - one-striped opossum