Mammalia - Rodentia - Geomyidae

Full reference: T. S. Kelly. 1994. PaleoBios 16(1):1-23

Belongs to Thomomys according to T. S. Kelly 1994

Sister taxa: Thomomys bottae, Thomomys gidleyi, Thomomys microdon, Thomomys monticola, Thomomys orientalis, Thomomys potomacensis, Thomomys talpoides, Thomomys townsendii, Thomomys umbrinus

Type specimen: Its type locality is Fish Spring Flat (UCMP V-93048), which is in a Blancan terrestrial horizon in Nevada

Ecology: fossorial browser

Average measurements (in mm): m1 1.14 x 1.73