Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Diprotodontia Owen, 1866 1 Suborder Vombatiformes Burnett, 1830 2 Suborder Phalangeriformes Szalay, 1982 3 Suborder Macropodiformes Ameghino, 1889