Order Rodentia - Family Sciuridae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 754 818 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Protoxerini Moore 1959 Protoxerini Moore 1959 , Bull. Am. Mus . Nat. Hist., 118: 168 . Genera: 6 genera with 30 species: Genus Epixerus Thomas 1909 (1 species with 3 subspecies) Genus Funisciurus Trouessart 1880 (9 species with 24 subspecies) Genus Heliosciurus Trouessart 1880 (6 species with 49 subspecies) Genus Myosciurus Thomas 1909 (1 species) Genus Paraxerus Forsyth Major 1893 (11 species with 35 subspecies) Genus Protoxerus Forsyth Major 1893 (2 species with 14 subspecies)