Trilobita - Corynexochida - Oryctocephalidae

Full reference: C. E. Resser. 1938. Middle Cambrian fossils from Pend Oreille Lake, Idaho. Smithsonian Miscellaneous Collections 97(3):1-12

Belongs to Oryctocephalus according to C. E. Resser 1938

Sister taxa: Oryctocephalus elongatus, Oryctocephalus incurvus, Oryctocephalus indicus, Oryctocephalus salteri

Type specimen: USNM 95038. Its type locality is Locality 37n (Pend Oreille Lake), which is in a Cambrian carbonate limestone/shale in the Lakeview Formation of Idaho.

Ecology: nektobenthic carnivore