Where: Japan (33.8° N, 134.0° E: paleocoordinates 46.9° N, 127.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nagase Formation, Cenomanian (100.5 - 93.9 Ma)

• STRATIGRAPHIC RELATIONS: From the Nagase Fm, which is overlain by the Kajisako Fm. AGE: Cenomanian, on the basis of ammonite, inoceramid, and radiolarian biostratigraphy. STRATIGRAPHIC POSITION: From lower lithostratigraphic unit in regional section; lower part of Nagase Fm.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, coarse-grained sandstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: COLLECTOR: Multiple collectors. REPOSITORY: Dept. of Geology, Kyushu University, Japan.

Primary reference: M. Tashiro and T. Kozai. 1982. Part V. Bivalve fossils from the Upper Cretaceous of the Monobe area, Shikoku. Palaeontological Society of Japan Special Papers 25:69-92 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87010: authorized by Austin Hendy, entered by Austin Hendy on 27.02.2009

Creative Commons license: CC BY (attribution)