Mammalia - Allotheria - Eucosmodontidae

Full reference: P. A. Johnston and R. C. Fox. 1984. Palaeontographica Abteilung A 186

Belongs to Stygimys according to D. L. Lofgren et al. 2005

Sister taxa: Stygimys gratus, Stygimys jepseni, Stygimys kuszmauli, Stygimys teilhardi, Stygimys vastus

Type specimen: Its type locality is Rav W-1 Horizon, which is in a Puercan terrestrial sandstone/conglomerate in the Ravenscrag Formation of Canada

Ecology: scansorial omnivore