Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Diprotodontia Owen, 1866 Suborder Macropodiformes Ameghino, 1889 Family Potoroidae Gray, 1821 - rat-kangaroos Genus Bettongia Gray, 1837 - short-nosed "rat"-kangaroos Bettongia gaimardi (Desmarest, 1822) - Tasmanian bettong