Where: Russian Federation (47.4° N, 142.5° E: paleocoordinates 47.8° N, 141.3° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Maruyamskaya Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From the lower Maruyamskaya suite of the "upper Okobykay" horizon, which lies below the "Maruyama" (Late Miocene) and above the "Kurasi" (Middle Miocene) horizons. THICKNESS: Total thickness of unit is 1200 m. AGE: Late Miocene, on the basis of classification into the "upper Okobykay" horizon. STRATIGRAPHIC POSITION: Composite checklist for upper part of the "formation" in this area.

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, conglomeratic siltstone

Size class: macrofossils

Collection methods: COLLECTOR: Unknown, presumably Uwatoko (c. 1937). REPOSITORY: Unknown repository.

Primary reference: A. I. Kafanov and K. Ogasawara. 2003. Neogene and Paleogene Molluscan (Bivalvia) Cenozones of Sakhalin and Kurile Islands. Science Reports, Institute of Geoscience, University of Tsukuba 24:45-79 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 70477: authorized by Austin Hendy, entered by Austin Hendy on 24.03.2007

Creative Commons license: CC BY (attribution)