Attributes / relations provided by
♦ 1Spermophilus variegatus, Emily C. Oaks, Paul J. Young, Gordon L. Kirkland, Jr., and David F. Schmidt, MAMMALIAN SPECIES No. 272, pp. 1-8 (1987)
♦ 2Tamias amoenus, Dallas A. Sutton, MAMMALIAN SPECIES No. 390, pp. 1-8 (1992)
♦ 3Tamias dorsalis, E. Blake Hart, MAMMALIAN SPECIES No. 399, pp. 1-6 (1992)
♦ 4Tamias merriami, Troy L. Best and Nancy J. Granai, MAMMALIAN SPECIES No. 476, pp. 1-9 (1994)
♦ 5Thomomys bottae, Cheri A. Jones and Colleen N. Baxter, MAMMALIAN SPECIES No. 742, pp. 114 (2004)
♦ 6Spermophilus townsendii, Eric A. Rickart, MAMMALIAN SPECIES No. 268, pp. 1-6 (1987)