PaleoDB taxon number: 298502
Full reference: M. Gordon. 1964. Carboniferous Cephalopods of Arkansas. United States Geological Survey Professional Paper 460:1-322
Type specimen: USNM 119054, a shell. Its type locality is USGS 5568 green, Pilot Mountain, which is in a Pendleian marine shale in the Fayetteville Formation of Arkansas.
Ecology: fast-moving nektonic carnivore