Class Mammalia Linnaeus, 1758 - mammals Order Diprotodontia Owen, 1866 Family Pseudocheiridae Winge, 1893 Genus Pseudocheirus Ogilby, 1837 - ring-tailed possums Pseudocheirus canescens (Waterhouse, 1846) - lowland ringtail see Pseudochirulus canescens (Waterhouse, 1846)