Class [Mammalia] Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Didelphidae Gray, 1821 - American opossums
       Genus Metachirus Burmeister, 1854 - brown "four-eyed" opossum
         1 Metachirus nudicaudatus (Geoffroy Saint-Hilaire, 1803) - brown four-eyed opossum