Full reference: J. M. Adrain and S. R. Westrop. 2007. Bearriverops, a new Lower Ordovician trilobite genus from the Great Basin, western USA, and classification of the family Dimeropygidae. Canadian Journal of Earth Sciences 44:337-366
Type specimen: SUI 99908, a cephalon/head (cranidium). Its type locality is MME 84, Middle Mountain, which is in a Stairsian shallow subtidal lime mudstone/grainstone in the Fillmore Formation of Utah.
Ecology: fast-moving low-level epifaunal deposit feeder