Cephalopoda - Ammonitida - Tetragonitidae
Full reference: Y. Shigeta, M. Futakami, and R. Hoffmann. 2012. Two new ammonoid genera of the subfamily Gabbioceratinae from the Upper Albian (Lower Cretaceous) of Hokkaido, Japan. Paleontological Research 16:208-218
Belongs to Obataceras according to Y. Shigeta et al. 2012
Sister taxon: Obataceras beraketense
Type specimen: NMNS PM7442, a shell (shell). Its type locality is SK1F11, Shikoro-zawa River, Manji area, which is in an Albian marine mudstone in the Hikagenosawa Formation of Japan.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 19.0
Distribution:
• Cretaceous of Japan (2 collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.