Full reference: G. G. Simpson. 1925. Mesozoic Mammalia 1. American triconodonts: part 2. American Journal of Science, series 5 10:334-358
Type specimen: YPM 13625, a maxilla (partial right maxilla with P3 and M1-4). Its type locality is Quarry 9, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian fluvial-lacustrine mudstone/sandstone in the Morrison Formation of Wyoming.
Ecology: scansorial insectivore