Ekhabinskaya Suite - Ekhabi River, Okha District, Sakhalin (Miocene of Russian Federation)

Where: Russian Federation (53.4° N, 143.1° E: paleocoordinates 53.8° N, 141.7° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Ekhabinskaya Formation (Okobykay Group), Late/Upper Miocene (11.6 - 5.3 Ma)

• STRATIGRAPHIC RELATIONS: From Ekhabinskaya suite of the "Okobykay" horizon, which lies between the "Dagi" (Early-Middle Miocene) and "Nutov" (Late Miocene) horizons. THICKNESS: Total thickness of unit is uknown. AGE: Late MIocene, on the basis of classification into the "Okobykay" horizon. STRATIGRAPHIC POSITION: Composite checklist for "formation" in this area.

• member-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified claystone and poorly lithified, sandy siltstone

• ENVIRONMENT: Not stated in text; assumed to be cool-water coastal setting on the basis of faunal composition.
• SPECIFIC LITHOLOGY: Alternations of clay, with frequent Interbeds of silt and sand. LITHIFICATION: Lithified, assumed on the basis of age and facies.

Size class: macrofossils

Collection methods: COLLECTOR: Unknown, presumably Khomenko (c. 1931). 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 70462: authorized by Austin Hendy, entered by Austin Hendy on 23.03.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Comprises only characteristic bivalvia; no other groups listed. NOMENCLATURE: Not an authoritative publication, but nomenclature revised by specialists, with species and subgenus-level identifications.
Bivalvia
 Nuculida - Nuculidae
 Cardiida - Tellinidae
Macoma scalaroides tellin clam
Macoma truncatoides tellin clam
"Macoma cf. calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
 Solenida - Pharidae
Siliqua alta Broderip and Sowerby I 1829 clam