Attributes / relations provided by
♦ 1Thomomys bottae, Cheri A. Jones and Colleen N. Baxter, MAMMALIAN SPECIES No. 742, pp. 114 (2004)
♦ 2Spermophilus beldingi, Stephen H. Jenkins and Bruce D. Eshelman, Mammalian Species No. 221, pp. 1-8 (1984)
♦ 3Spermophilus columbianus, Charles L. Elliott and Jerran T. Flinders, MAMMALIAN SPECIES No. 372, pp. 1-9 (1991)