Attributes / relations provided by ♦1Geomys bursarius (Rodentia: Geomyidae), MATTHEW B. CONNIOR, MAMMALIAN SPECIES 43(879):104–117 (2011) ♦2Microtus canicaudus, B. J. Verts and Leslie N. Carraway, MAMMALIAN SPECIES No. 267, pp. 1-4 (1987) ♦3Microtus pinetorum, Michael J. Smolen, Mammalian Species No. 147, pp. 1-7 (1981)