Attributes / relations provided by
♦ 1Microtus townsendii, John E. Cornely and B. J. Verts, MAMMALIAN SPECIES No. 325, pp. 1-9 (1988)
♦ 2Oryzomys palustris, James L. Wolfe, Mammalian Species No. 176, pp. 1-5 (1982)
♦ 3Sylvilagus audubonii, Joseph A. Chapman and Gale R. Willner, MAMMALIAN SPECIES No. 106, pp. 1-4 (1978)