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 Tamias (Neotamias) umbrinus subsp. umbrinus J. A. Allen 1890 Tamias (Neotamias) umbrinus subsp. umbrinus J. A. Allen 1890 , Bull. Am. Mus . Nat. Hist., 3: 96 . Type Locality: "Uintah Mountains, south of Ft. Bridger" Restricted by A. H. Howell (1929:94) to Blacks Fork, about 8,000 ft. [ 2,438 m ], Summit Co., Utah [ USA ].