Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Diprotodontia Owen, 1866 Suborder Phalangeriformes Szalay, 1982 1 Superfamily Phalangeroidea Thomas, 1888 see Suborder Phalangeriformes Szalay, 1982 2 Superfamily Petauroidea Bonaparte, 1838