Class Mammalia Linnaeus, 1758 - mammals Order Didelphimorphia Gill, 1872 Family Didelphidae Gray, 1821 - American opossums Subfamily Didelphinae Gray, 1821 Genus Lestodelphys Tate, 1934 - Patagonian opossum 1 Lestodelphys halli (Thomas, 1921) - Patagonian opossum