Cephalopoda - Ammonitida - Gaudryceratidae

PaleoDB taxon number: 331588

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 particostatum, Anagaudryceras politissimum, Anagaudryceras pulchrum, Anagaudryceras sacya, Anagaudryceras subsacya, Anagaudryceras subtilineatum, Anagaudryceras tennenti, Anagaudryceras valudavurense

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 width 15.8, shell diameter 47.7