Class Mammalia Linnaeus, 1758 - mammals Order Diprotodontia Owen, 1866 Family Pseudocheiridae Winge, 1893 Genus Pseudocheirus Ogilby, 1837 - ring-tailed possums Pseudocheirus herbertensis (Collett, 1884) - Herbert River ringtail see Pseudochirulus herbertensis (Collett, 1884)