Where: Japan (45.5° N, 141.9° E: paleocoordinates 50.1° N, 129.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Late/Upper Campanian (83.5 - 70.6 Ma)

• Presumably it may have come from Unit E on the western side of the compact and coarse sandstone of Unit G which constitute the wave-cut terrace for a long distance off the western end of Kiyohama-I.

Environment/lithology: marine; lithified, fine-grained, nodular, silty sandstone

Size class: macrofossils

Collected by H. Honma in 1981

• Repository: MNH (Natural History Collection of Northern Hoikkaido, c/o T. Miyauchi, Midori 6-Chome, Wakkanai)

Primary reference: T. Matsumoto and T. Miyauchi. 1983. Cretaceous Nautiloids from Hokkaido-III Part 3. Some Nautiloids from the Campanian of Soya, Northern Hokkaido. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 132:220-229 [M. Clapham/K. Okamoto/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 165935: authorized by Matthew Clapham, entered by Matthew Clapham on 31.01.2015

Creative Commons license: CC BY (attribution)