Cephalopoda - Ammonitida - Perisphinctidae
Full reference: T. Sato and T. Yamada. 2014. A new Oxfordian (Late Jurassic) ammonite assemblage from the Arimine Formation (Tetori Group) in the Arimine area, southeastern Toyama Prefecture, northern Central Japan. Bulletin of the National Museum of Nature and Science, Series C, Geology and Paleontology 40:21-55
Belongs to Subdiscosphinctes according to T. Sato and T. Yamada 2014
Sister taxa: none
Type specimen: NMNS PM23925, a shell. Its type locality is AR0021, Kami-uwabamidani Valley, which is in an Oxfordian marine siltstone in the Arimine Formation of Japan.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 250.0
Distribution: found only at AR0021, Kami-uwabamidani Valley
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.