Cephalopoda - Ammonitida - Tetragonitidae
Full reference: Y. Morozumi. 1985. Late Cretaceous (Campanian and Maastrichtian) ammonites from Awaji Island, southwest Japan. Bulletin of the Osaka Museum of Natural History 39:1-58
Belongs to Anagaudryceras according to Y. Shigeta and H. Maeda 2023
See also Morozumi 1985, Shigeta and Maeda 2005 and Shigeta et al. 2015
Sister taxa: Anagaudryceras aurarium, Anagaudryceras compressum, Anagaudryceras involvulum, Anagaudryceras lueneburgense, Anagaudryceras madraspatanum, Anagaudryceras mikobokense, Anagaudryceras nanum, Anagaudryceras particostatum, Anagaudryceras politissimum, Anagaudryceras pulchrum, Anagaudryceras sacya, Anagaudryceras subsacya, Anagaudryceras subtilineatum, Anagaudryceras tennenti, Anagaudryceras valudavurense, Anagaudryceras yamashitai
Type specimen: GK.H6882, a shell. Its type locality is Aw15, Haraikawa (loc. 210A), which is in a Maastrichtian marine siltstone in the Shimonada Formation of Japan.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 29.7
Distribution:
• Cretaceous of Japan (3 collections), the Russian Federation (11)
Total: 14 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.