Class Mammalia Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Didelphidae Gray, 1821 - American opossums
       Genus Philander Brisson, 1762 - gray and black "four-eyed" opossums
         1 Philander opossum (Linnaeus, 1758) - gray four-eyed opossum
         2 Philander mcilhennyi Gardner & Patton, 1972 - McIlhenny's four-eyed opossum