Where: Russian Federation (47.1° N, 142.1° E: paleocoordinates 48.3° N, 139.6° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Kholmskaya Formation (Kholmsk Group), Late/Upper Oligocene (28.4 - 23.0 Ma)
• STRATIGRAPHIC RELATIONS: From Kholmskaya suite of the the "Kholmsk" horizon, which lies between the "Arakay" (Early Oligocene) and "Ulynin" (Early Miocene) horizons. THICKNESS: Total thickness of unit is 1200 m. AGE: Late Oligocene, on the basis of classification into the "Kholmsk" horizon. STRATIGRAPHIC POSITION: Composite checklist for formation in this area.
• formation-level stratigraphic resolution
Environment/lithology: coastal; lithified, concretionary, tuffaceous, silty, sandy, cherty/siliceous mudstone
Size class: macrofossils
Collection methods: COLLECTOR: Presumably Smekhov (c. 1948). 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 70475: authorized by Austin Hendy, entered by Austin Hendy on 24.03.2007
Creative Commons license: CC BY (attribution)
Taxonomic list