Class [Mammalia] Linnaeus, 1758 - mammals
Order Rodentia Bowdich, 1821 - rodents
Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
Subfamily Sciurinae Batsch, 1788 - tree and ground squirrels
Genus Heliosciurus Trouessart, 1880 - sun squirrels
1 Heliosciurus gambianus (Ogilby, 1835) - Gambian sun squirrel
2 Heliosciurus mutabilis Peters, 1852 - southern sun squirrel
3 Heliosciurus rufobrachium Waterhouse, 1842 - red-legged sun squirrel
4 Heliosciurus ruwenzorii Schwann, 1904 - Ruwenzori sun squirrel
5 Heliosciurus undulatus (True, 1892) - eastern sun squirrel