Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Diprotodontia Owen, 1866 Suborder Macropodiformes Ameghino, 1889 Family Macropodidae Gray, 1821 - wallabies and kangaroos Subfamily Macropodinae Gray, 1821 Genus Petrogale Gray, 1837 - rock wallabies Petrogale lateralis Gould, 1842 - black-footed rock wallaby Petrogale lateralis hacketti Thomas, 1905