Class Mammalia Linnaeus, 1758 - mammals
   Order Didelphimorphia Gill, 1872
     Family Didelphidae Gray, 1821 - American opossums
       Subfamily Didelphinae Gray, 1821
         Genus Monodelphis Burnett, 1830 - short-tailed opossums
           01 Monodelphis adusta (Thomas, 1897) - sepia short-tailed opossum
           02 Monodelphis americana (Müller, 1776) - northern three-striped opossum
           03 Monodelphis brevicaudata (Erxleben, 1777) - northern red-sided opossum
           04 Monodelphis dimidiata (Wagner, 1847) - yellow-sided opossum
           05 Monodelphis domestica (Wagner, 1842) - gray short-tailed opossum
           06 Monodelphis emiliae (Thomas, 1912) - Emilia's short-tailed opossum
           07 Monodelphis iheringi (Thomas, 1888) - Ihering's three-striped opossum
           08 Monodelphis kunsi Pine, 1975 - pygmy short-tailed opossum
           09 Monodelphis maraxina Thomas, 1923 - Marajó short-tailed opossum
           10 Monodelphis osgoodi Doutt, 1938 - Osgood's short-tailed opossum
           11 Monodelphis rubida (Thomas, 1899) - chestnut-striped opossum
           12 Monodelphis scalops (Thomas, 1888) - long-nosed short-tailed opossum
           13 Monodelphis sorex (Hensel, 1872) - southern red-sided opossum
           14 Monodelphis theresa Thomas, 1921 - southern three-striped opossum
           15 Monodelphis unistriata (Wagner, 1842) - one-striped opossum