Where: Japan (43.3° N, 144.1° E: paleocoordinates 45.0° N, 141.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Shakubetsu Formation, Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From Shakubetsu Fm of the Urahoro Gp, which overlies the Shitakara Fm of the Urahoro Gp (Early Oligocene) and is overlain by the Omagari Fm of Ombetsu Gp. THICKNESS: From bed within unit 30-280 m thick. AGE: Early Oligocene based on molluscan biostratigraphy. STRATIGRAPHIC POSITION: From bed within upper part of the formation.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified conglomerate and lithified sandstone

Size class: macrofossils

Collection methods: COLLECTOR: Presumably Y. Honda (c. 1989). REPOSITORY: Probably Tohoku University, Japan.

Primary reference: Y. Honda. 1989. Paleogene molluscan faunas from the Kushiro Coal Field, Eastern Hokkaido. Tohoku University, Science Report, 2nd series 60(1):1-137 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 70760: authorized by Austin Hendy, entered by Austin Hendy on 03.04.2007

Creative Commons license: CC BY (attribution)