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 Trichosurini Flynn, 1911
                 Genus Wyulda Alexander, 1918 - scaly-tailed possum
                   1 Wyulda squamicaudata Alexander, 1918 - scaly-tailed possum