Class Mammalia Linnaeus, 1758 - mammals
   Order Didelphimorphia Gill, 1872
     Family Didelphidae Gray, 1821 - American opossums
       Subfamily Didelphinae Gray, 1821
         Genus Micoureus Lesson, 1842
           Micoureus demerarae (Thomas, 1905) - woolly mouse opossum