Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Diprotodontia Owen, 1866
       Suborder Phalangeriformes Szalay, 1982
         Superfamily Petauroidea Bonaparte, 1838
           Family Pseudocheiridae Winge, 1893
             Subfamily Pseudocheirinae Winge, 1893
               1 Genus Petropseudes Thomas, 1923
               2 Genus Pseudocheirus Ogilby, 1837 - ring-tailed possums
               3 Genus Pseudochirulus Matschie, 1915