Cephalopoda - Ammonitida - Sphaeroceratidae
Alternative combination: Kheraiceras intermedium
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 Iniskinites according to R. W. Imlay 1975
See also Imlay 1953
Sister taxa: Iniskinites abruptus, Iniskinites andinus, Iniskinites cepoides, Iniskinites crassus, Iniskinites evolutus, Iniskinites magniformus, Iniskinites martini
Type specimen: USNM 108223, a shell. Its type locality is USGS Mesozoic 21272, Chisik Island, which is in a Callovian marine siliciclastic in the Tuxedni Formation of Alaska.
Average measurements (in mm): shell diameter 86.0
Distribution:
• Jurassic of United States (7: Alaska collections)
Total: 7 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.