Class Mammalia Linnaeus, 1758 - mammals Order Diprotodontia Owen, 1866 Family Pseudocheiridae Winge, 1893 Genus Pseudocheirus Ogilby, 1837 - ring-tailed possums Pseudocheirus forbesi (Thomas, 1887) - moss-forest ringtail see Pseudochirulus forbesi (Thomas, 1887)