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 Protoxerus (Protoxerus) Forsyth Major 1893 Protoxerus (Protoxerus) Forsyth Major 1893 , Proc. Zool. Soc. Lond., 1893: 189 . Type Species: Sciurus (Protoxerus) stangeri Waterhouse 1842