Full reference: T. M. Bown and K. D. Rose. 1987. Paleontological Society Memoir 23
Type specimen: USGS 492, a mandible (right mandibular fragment with part of p3, p4-m3, partially resorbed alveolus forp2, and posterior part of alveolus for canine). Its type locality is Reservoir Creek Bonanza, which is in a Wasatchian terrestrial horizon in the Willwood Formation of Wyoming.
Ecology: arboreal insectivore
Average measurements (in mm): P4 2.33 x 3.28, M1 2.22 x 3.33, M2 2.06 x 3.77, p4 2.23 x 2.12, m1 2.33 x 2.12, m2 2.32 x 2.14