Where: Japan (43.2° N, 142.1° E: paleocoordinates 52.6° N, 139.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Yezo Group, Albian (113.0 - 100.5 Ma)

• Assigned to unit If, the top member of the lower Yezo Group. This unit is Albian on the ground of stratigraphic position and the occurrence of Tetragonites cf. timotheanus.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, tuffaceous, calcareous siltstone

Size class: macrofossils

Preservation: cast

Collection methods: Repository: Geology Department, Kyushu University

Primary reference: T. Matsumoto, T. Miyauchi, Y. Kanie, Y. Miyata, and Y. Ueda. 1984. Cretaceous nautiloids from Hokkaido - V. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 134:335-346 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 166262: authorized by Matthew Clapham, entered by Matthew Clapham on 07.02.2015

Creative Commons license: CC BY (attribution)