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 Sciurinae Batsch, 1788 - tree and ground squirrels
           Genus Sundasciurus Moore, 1958 - Sunda squirrels
             01 Sundasciurus brookei Thomas, 1892 - Brooke's squirrel
             02 Sundasciurus davensis Sanborn, 1952
             03 Sundasciurus fraterculus Thomas, 1895
             04 Sundasciurus hippurus I. Geoffroy, 1831 - horse-tailed squirrel
             05 Sundasciurus hoogstraali Sanborn, 1952
             06 Sundasciurus jentinki Thomas, 1887 - Jentink's squirrel
             07 Sundasciurus juvencus Thomas, 1908
             08 Sundasciurus lowii Thomas, 1892 - Low's squirrel
             09 Sundasciurus mindanensis Steere, 1890
             10 Sundasciurus moellendorffi Matschie, 1898
             11 Sundasciurus philippinensis Waterhouse, 1839
             12 Sundasciurus rabori Heaney, 1979
             13 Sundasciurus samarensis Steere, 1890
             14 Sundasciurus steerii Günther, 1876[1877]
             15 Sundasciurus tenuis Horsfield, 1824 - slender squirrel
             16 Subgenus Sundasciurus Moore, 1958
             17 Subgenus Aletesciurus Moore, 1958