Where: Russian Federation (50.4° N, 143.7° E: paleocoordinates 51.2° N, 141.7° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Borskaya Formation (Uynin Group), Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From Borskaya suite of the "Dagi/Uynin" horizon, which lies between the "Kholmsk" (Late Oligocene) and "Okobykay" (Late Miocene) horizons. THICKNESS: Total thickness of unit is 1000 m. AGE: Early Miocene, on the basis of classification into the "Dagi/Uynin" horizon. STRATIGRAPHIC POSITION: Composite checklist for formation in this area.

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, concretionary, tuffaceous sandstone and poorly lithified, concretionary siltstone

Size class: macrofossils

Collection methods: COLLECTOR: Unknown, presumably Pleshakov (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 70448: authorized by Austin Hendy, entered by Austin Hendy on 22.03.2007

Creative Commons license: CC BY (attribution)