PaleoDB taxon number: 300384
Full reference: R. W. Imlay. 1953. Callovian (Jurassic) ammonites from the United States and Alaska Part 2. Alaska Peninsula and Cook Inlet regions. United States Geological Survey Professional Paper 249-B:41-108
Sister taxon: Gowericeras spinosum
Type specimen: USNM 108137, a shell. Its type locality is USGS Mesozoic 3015, Chisik Island, which is in a Callovian marine siliciclastic in the Chinitna Formation of Alaska.
Ecology: fast-moving nektonic carnivore