Where: Russian Federation (47.1° N, 142.1° E: paleocoordinates 48.8° N, 139.2° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Arakayskaya Formation (Arakay Group), Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From Arakayskaya suite of the upper part of the "Lesogor" horizon, which lies between the "Lesogor/Shebunin" (Eocene) and "Kholmsk" (Late Oligocene) horizons. THICKNESS: Total thickness of unit is 270 m. AGE: Early Oligocene, on the basis of classification into the "Arakay" horizon. STRATIGRAPHIC POSITION: Composite checklist for formation in this area.

• formation-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, sandy tuff and lithified sandstone

Size class: macrofossils

Collection methods: COLLECTOR: Unknown. 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 70445: authorized by Austin Hendy, entered by Austin Hendy on 22.03.2007

Creative Commons license: CC BY (attribution)