Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Infraclass Metatheria Huxley, 1880 Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818 Superfamily Phalangeroidea Thomas, 1888 see Suborder Phalangeriformes Szalay, 1982 Family Macropodidae Gray, 1821 - wallabies and kangaroos