Class Mammalia Linnaeus, 1758 - mammals Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Family Macropodidae Gray, 1821 - wallabies and kangaroos Genus Dendrolagus Müller, 1839 - tree kangaroos Dendrolagus lumholtzi Collett, 1884 - Lumholtz's tree kangaroo