Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
       Subfamily Pteromyinae Brandt, 1855 - flying squirrels
         01 Genus Petaurista Link, 1795 - giant flying squirrels
         02 Genus Biswamoyopterus Saha, 1981 - Namdapha flying squirrel
         03 Genus Eupetaurus Thomas, 1888 - woolly flying squirrel
         04 Genus Pteromys Cuvier, 1800 - Old World flying squirrels
         05 Genus Glaucomys Thomas, 1908 - American flying squirrels
         06 Genus Aeromys Robinson & Kloss, 1915 - large black flying squirrels
         07 Genus Hylopetes Thomas, 1908 - pygmy flying squirrels
         08 Genus Petinomys Thomas, 1908 - dwarf flying squirrels
         09 Genus Aeretes Allen, 1940 - groove-toothed flying squirrel
         10 Genus Trogopterus Heude, 1898 - complex-toothed flying squirrel
         11 Genus Belomys Thomas, 1908 - hairy-footed flying squirrel
         12 Genus Pteromyscus Thomas, 1908 - smoky flying squirrel
         13 Genus Petaurillus Thomas, 1908 - pygmy flying squirrels
         14 Genus Iomys Thomas, 1908 - Horsfield's flying squirrel