Cephalopoda - Ammonitida - Tetragonitidae
Full reference: Y. Shigeta and T. Nishimura. 2014. A new species of Anagaudryceras (Ammonoidea, Gaudryceratidae) from the lowest Maastrichtian of Hokkaido, Japan. Paleontological Research 18:176-185
Belongs to Anagaudryceras according to Y. Shigeta and T. Nishimura 2014
Sister taxa: Anagaudryceras aurarium, Anagaudryceras involvulum, Anagaudryceras lueneburgense, Anagaudryceras madraspatanum, Anagaudryceras matsumotoi, Anagaudryceras mikobokense, Anagaudryceras nanum, Anagaudryceras particostatum, Anagaudryceras pauli, Anagaudryceras politissimum, Anagaudryceras pulchrum, Anagaudryceras sacya, Anagaudryceras subsacya, Anagaudryceras subtilineatum, Anagaudryceras tennenti, Anagaudryceras valudavurense, Anagaudryceras yamashitai
Type specimen: HMG-136, a shell. Its type locality is Shirafune-no-sawa River, which is in a Maastrichtian marine sandstone in the Hakobuchi Formation of Japan.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 47.7
Distribution:
• Cretaceous of Japan (5 collections)
Total: 5 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.