Where: Japan (43.0° N, 134.1° E: paleocoordinates 43.2° N, 133.5° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Shiranuka Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• STRATIGRAPHIC RELATIONS: From Shiranuka Fm, which overlies the Atsunai Fm (Middle Miocene) of the Atsunai Gp, and is overlain by Pleistocene terraces. THICKNESS: From bed with formation that attains a thickness of 350 m. AGE: latest Late Miocene-Pliocene on the basis of molluscan biostratigraphy; Takikawa-Hombetsu stage (6.0-2 Ma); some debate over age - some author refer fauna strictly to the Pliocene. STRATIGRAPHIC POSITION: From unknown position within the Shiranuka Fm.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, gray sandstone and lithified, gray siltstone

Size class: macrofossils

Collection methods: COLLECTOR: Y. Honda. REPOSITORY: Institute of Geology and Paleontology, Tohoku University, Sendai, Japan (IGPS).

Primary reference: Y. Honda. 1988. Molluscan fossils from the Atsunai Group, Kushiro Coal Field, Eastern Hokkaido, Northern Japan. Sato Ho-on Kai Special Publication (Profesoor T. Kotaka Commemorartive Volume) 351-363 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 70407: authorized by Austin Hendy, entered by Austin Hendy on 21.03.2007

Creative Commons license: CC BY (attribution)