Attributes / relations provided by
♦ 1Spermophilus lateralis, Molly A. Bartels and Doug P. Thompson, MAMMALIAN SPECIES No. 440, pp. 1-8 (1993)
♦ 2Zapus princeps, E. Blake Hart, Mark C. Belk, Eralee Jordan, and Malinda W. Gonzalez, MAMMALIAN SPECIES No. 749, pp. 17 (2004)