Full reference: T. M. Bown and K. D. Rose. 1991. Evolutionary relationships of a new genus and three new species of Omomyid primates (Willwood Formation, Lower Eocene, Bighorn Basin, Wyoming). Journal of Human Evolution 20(6):465-480
Sister taxon: Steinius vespertinus
Type specimen: USGS 28327, a mandible (right dentary with p4-m2). Its type locality is USGS D-1834, which is in a Wasatchian fluvial-lacustrine horizon in the Willwood Formation of Wyoming.
Ecology: arboreal insectivore
Average measurements (in mm): p4 2.60 x 1.95, m1 2.90 x 2.25, m2 2.80 x 2.45