Where: Japan (33.8° N, 134.0° E: paleocoordinates 43.7° N, 124.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kajisako Formation, Late/Upper Santonian (85.8 - 83.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Kajisako Fm, which overlies the Nagase Fm. AGE: Late Santonian, on the basis of ammonite, inoceramid, and radiolarian biostratigraphy. STRATIGRAPHIC POSITION: From the upper lithostratigraphic unit in regional section; middle part of Kajisako Fm.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, gray mudstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: COLLECTOR: Multiple collectors. REPOSITORY: Dept. of Geology, Kyushu University, Japan and Odochi Elementary School.

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 87015: authorized by Austin Hendy, entered by Austin Hendy on 27.02.2009

Creative Commons license: CC BY (attribution)