Trilobita - Asaphida - Pterocephaliidae

Full reference: A. R. Palmer. 1965. Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States. United States Geological Survey Professional Paper 493:1-105

Belongs to Morosa according to P. A. Jell and J. M. Adrain 2003

Sister taxa: Morosa extensa, Morosa longispina

Type specimen: USNM 141807, a cephalon/head (cranidium)

Ecology: fast-moving low-level epifaunal deposit feeder