Class [Mammalia] Linnaeus, 1758 - mammals Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Family Didelphidae Gray, 1821 - American opossums Genus Caluromysiops Sanborn, 1951 - black-shouldered opossum 1 Caluromysiops irrupta Sanborn, 1951 - black-shouldered opossum