Class Mammalia Linnaeus, 1758 - mammals
   Order Diprotodontia Owen, 1866
     Family Pseudocheiridae Winge, 1893
       1 Genus Hemibelideus (Collett, 1884) - brush-tipped ring-tailed possum
       2 Genus Petauroides Thomas, 1888 - greater gliding possum
       3 Genus Petropseudes Thomas, 1923
       4 Genus Pseudocheirus Ogilby, 1837 - ring-tailed possums
       5 Genus Pseudochirops Matschie, 1915