Kurasiyskaya Suite - Kholmsk District, Sakhalin (Miocene of Russian Federation)

Where: Russian Federation (47.1° N, 142.1° E: paleocoordinates 47.4° N, 140.8° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From Kurasiyskaya suite of the the "Kurasi" horizon, which lies between the "Uglegor" (Middle Miocene) and "Maruyama" (Late Miocene-Early Pliocene) horizons. THICKNESS: Total thickness of unit is 1500 m. AGE: Late Miocene, on the basis of classification into the "Kurasi" horizon. STRATIGRAPHIC POSITION: Composite checklist for formation in this area.

• formation-level stratigraphic resolution

Environment/lithology: coastal; lithified, sandy, cherty/siliceous siltstone and lithified, argillaceous, cherty/siliceous siltstone

• ENVIRONMENT: Not stated in text; assumed to be cool-water coastal siliciclastic setting on the basis of faunal composition.
• SPECIFIC LITHOLOGY: Black hard siliceous siltstones alternating with sandstones and siltstones in its lower portion; siliceous and clayey siltstones, argillites with sandstones in its upper portions . LITHIFICATION: Lithified, on the basis of prior name "hard shale", age and facies.

Size class: macrofossils

Collection methods: COLLECTOR: 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 70476: authorized by Austin Hendy, entered by Austin Hendy on 24.03.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia; no other taxa listed. NOMENCLATURE: Not an authoritative publication, but nomenclature revised by specialists, with species and subgenus-level identifications.
Bivalvia
 Nuculanida - Sareptidae
 Nuculanida - Malletiidae
 Nuculanida - Yoldiidae
Yoldia (Yoldia) chojensis, "Megayoldia (Portlandella) nitida" = Yoldia nitida
"Megayoldia (Portlandella) nitida" = Yoldia nitida Brocchi 1814 clam
 Nuculanida - Nuculanidae
Nuculana sachalinensis pointed nut clam
 Nuculida - Nuculidae
 Pectinida - Limidae
 Pectinida - Pectinoidae
 Lucinida - Thyasiridae
Conchocele bisecta Conrad 1849 clam
 Pholadida - Myidae
Cryptomya cf. ferruginea softshell clam
Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
"Mya (Mya) uzenensis" = Mya (Mya) pseudoarenaria Schlesch 1931 softshell clam
Mya (Mya) cuneiformis Bohm 1915 softshell clam
 Cardiida - Cardiidae
Ciliatocardium sachalinense Khramova 1962 cockle
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus Mohr 1786 cockle
 Cardiida - Tellinidae
Macoma gracilis tellin clam
Macoma cf. optiva tellin clam
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
"Macoma cf. calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
Macoma cf. simizuensis Krishtofovich 1957 tellin clam
 Hiatellida - Hiatellidae
Hiatella arctica Linnaeus 1767 clam