Class [Mammalia] Linnaeus, 1758 - mammals Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Family Didelphidae Gray, 1821 - American opossums Genus Caluromys Allen, 1900 - woolly opossums Caluromys derbianus (Waterhouse, 1841) - Derby's woolly opossum