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) senex subsp. senex J. A. Allen 1890 Tamias (Neotamias) senex subsp. senex J. A. Allen 1890 , Bull. Am. Mus . Nat. Hist., 3: 83 . Type Locality: "Summit of Donner Pass, Placer Co., Cal[ifornia, USA ]." .