Where: Japan (43.3° N, 142.0° E: paleocoordinates 45.5° N, 138.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Poronai Formation, Late/Upper Eocene (37.2 - 33.9 Ma)

• STRATIGRAPHIC RELATIONS: From Poronai Fm. Relationships to adjacent units not stated in text. THICKNESS: Sample from mudstone surrounding concretion. AGE: Poronian stage, Late Eocene. STRATIGRAPHIC POSITION: From B zone of Teshima (1955), although the position of this zone relative to the entire formation is not stated in text.

• bed-level stratigraphic resolution

Environment/lithology: basinal (); poorly lithified, gray mudstone and siliciclastic

Size class: macrofossils

Collection methods: bulk,

• COLLECTOR: K. Amano and R. G. Jenkins (c. 2006). REPOSITORY: Joetsu University of Education (JUE).

Primary reference: K. Amano and R. G. Jenkins. 2007. Eocene drill holes in cold-seep bivalves of Hokkaido, northern Japan. Marine Ecology 28:108-114 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 71010: authorized by Austin Hendy, entered by Austin Hendy on 14.04.2007

Creative Commons license: CC BY (attribution)