Class [Mammalia] Linnaeus, 1758 - mammals Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Family Didelphidae Gray, 1821 - American opossums Genus Lestodelphys Tate, 1934 - Patagonian opossum Lestodelphys halli (Thomas, 1921) - Patagonian opossum