Cephalopoda - Ammonitida - Acanthoceratidae
Full reference: T. Matsumoto, T. Nishida, and S. Toshimitsu. 2003. Early Cenomanian (Cretaceous) ammonoids Utaturiceras and Graysonites from Hokkaido, North Japan. Bulletin of the Geological Survey of Japan 54:131-159
Belongs to Utaturiceras according to T. Matsumoto et al. 2003
Sister taxa: Utaturiceras discoidale, Utaturiceras vicinale
Type specimen: GK.H8410, a shell. Its type locality is R543, Suribachi-zawa, which is in a Cenomanian marine mudstone in Japan.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 142.4
Distribution:
• Cretaceous of Japan (3 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.