Trilobita - Ptychopariida - Olenidae

Full reference: R. J. Ross, Jr. 1970. Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada. United States Geological Survey Professional Paper 639

Belongs to Hypermecaspis according to R. J. Ross 1970

Sister taxa: Hypermecaspis armata, Hypermecaspis brevifrons, Hypermecaspis bulmani, Hypermecaspis inermis, Hypermecaspis inflecta, Hypermecaspis latigena, Hypermecaspis venulosa

Type specimen: USNM 160835, a cephalon/head (cranidium)

Ecology: fast-moving low-level epifaunal carnivore