Cephalopoda - Ammonitida - Sphaeroceratidae
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
Belongs to Lilloettia according to A. J. Arthur et al. 1993
See also Imlay 1953
Sister taxa: Lilloettia boesei, Lilloettia buckmani, Lilloettia lilloetensis, Lilloettia mertonyarwoodi, Lilloettia milleri, Lilloettia steinmanni, Lilloettia tipperi
Type specimen: USNM 108035, a shell. Its type locality is USGS Mesozoic 11049, Iniskin Peninsula, which is in a Callovian marine siliciclastic in the Chinitna Formation of Alaska.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 37.1
Distribution:
• Jurassic of Canada (1: British Columbia collection), United States (5: Alaska)
Total: 6 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.