Cephalopoda - Ammonitida - Kosmoceratidae
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 Kepplerites (Seymourites) according to R. W. Imlay 1953
Sister taxa: Kepplerites (Seymourites) abruptus, Kepplerites (Seymourites) gitinsi, Kepplerites (Seymourites) ingrahami, Kepplerites (Seymourites) mcevoyi, Kepplerites (Seymourites) multus, Kepplerites (Seymourites) plenus, Kepplerites (Seymourites) tychonis
Type specimen: USNM 108124, a shell. Its type locality is USGS Mesozoic 2992, Chisik Island, which is in a Callovian marine siliciclastic in the Chinitna Formation of Alaska.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 104.0
Distribution:
• Jurassic of United States (3: Alaska collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.