Attributes / relations provided by
♦ ¹Zapus princeps, E. Blake Hart, Mark C. Belk, Eralee Jordan, and Malinda W. Gonzalez, MAMMALIAN SPECIES No. 749, pp. 1–7 (2004)
♦ ²An Ecological Survey of Endemic MOUNTAIN BEAVERS (Aplodontia rufa) in California, 1979-83, Dale T. Steele', State of California, THE RESOURCES AGENCY, Department of Fish and Game