Mammalia - Allotheria - Neoplagiaulacidae

Alternative combination: Ectypodus grangeri

Full reference: G. G. Simpson. 1935. Proceedings of the United States National Museum 83

Belongs to Neoplagiaulax according to C. L. Gazin 1969

Sister taxa: Neoplagiaulax burgessi, Neoplagiaulax donaldorum, Neoplagiaulax hazeni, Neoplagiaulax hunteri, Neoplagiaulax jepi, Neoplagiaulax kremnus, Neoplagiaulax macintyrei, Neoplagiaulax macrotomeus, Neoplagiaulax mckennai, Neoplagiaulax nanophus, Neoplagiaulax paskapooensis, Neoplagiaulax serrator

Type specimen: Its type locality is Gidley Quarry, which is in a Torrejonian terrestrial horizon in the Fort Union Formation of Montana

Ecology: arboreal omnivore

Average measurements (in mm): m1 3.37 x 1.40