Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Diprotodontia Owen, 1866
       Suborder Phalangeriformes Szalay, 1982
         Superfamily Phalangeroidea Thomas, 1888 see Suborder Phalangeriformes Szalay, 1982
           Family Phalangeridae Thomas, 1888 - possums and cuscuses
             Subfamily Phalangerinae Thomas, 1888
               Tribe Phalangerini Thomas, 1888
                 Genus Phalanger Storr, 1780 - cuscuses
                   Phalanger gymnotis Peters & Doria, 1875 - Aru Island ground cuscus
                     Phalanger gymnotis leucippus Thomas, 1898