Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Scandentia Wagner, 1855 - tree shrews
       Family Ptilocercidae Lyon, 1913
         Genus Ptilocercus Gray, 1848 - pen-tailed tree shrew, feather-tailed tree shrew
           1 Ptilocercus lowii Gray, 1848 - feather-tailed tree shrew