PaleoDB taxon number: 119561
Full reference: S. Niko and R. H. Mapes. 2007. Trigonoceratid nautilids from the Early Carboniferous Imo Formation of Arkansas, Midcontinent North America. Paleontological Research 11(3):293-303
Type specimen: OUZC 5225, a shell. Its type locality is Loc. 1. USGS 14369. Road cut on se side US 65, 0.8 km sw of Peyton Creek Bridge, which is in a Serpukhovian offshore grainstone/shale in the Imo Formation of Arkansas.
Ecology: nektobenthic carnivore