Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
         Subfamily Pteromyinae Brandt, 1855 - flying squirrels
           Genus Petinomys Thomas, 1908 - dwarf flying squirrels
             1 Petinomys crinitus Hollister, 1911
             2 Petinomys fuscocapillus Jerdon, 1847 - Travancore flying squirrel
             3 Petinomys genibarbis Horsfield, 1822 - whiskered flying squirrel
             4 Petinomys hageni Jentink, 1888
             5 Petinomys lugens Thomas, 1895
             6 Petinomys sagitta Linnaeus, 1766
             7 Petinomys setosus Temminck, 1844 - white-bellied flying squirrel
             8 Petinomys vordermanni Jentink, 1890 - Vordermann's flying squirrel