Marine Bivalvia of Utkholokskaya Suite in western Kamchatka (Oligocene of Russian Federation)

Where: Russian Federation (57.5° N, 157.2° E: paleocoordinates 59.1° N, 159.4° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Utkholokskaya Formation, Chattian (28.1 - 23.0 Ma)

• Enters into the Utkholok-Viventok Horizon in western Kamchatka.

• formation-level stratigraphic resolution

Environment/lithology: marine; tuff and lithified sandstone

• Tuffs, sandstones, siltstones and claystones with inclusions of ball-shaped carbonaceous and coaly-pyrite concretions, in the lower portion andesites, coaly sandstones and coals. Thickness 230-460m.

Size class: macrofossils

Primary reference: A. I. Kafanov and K. Ogasawara. 2004. Neogene and Paleogene Molluscan (Bivalvia) Cenozones of the Russian Northeast. Science Reports of the Institute of Geoscience, University of Tsukuba, Section B 25:9-45 [W. Kiessling/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 50178: authorized by Wolfgang Kiessling, entered by Sabine Nürnberg on 09.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Poromyida - Cuspidariidae
Cardiomya kavranensis, Cardiomya majanatschensis
 Pectinida - Pectinoidae
Delectopecten utcholokensis, Delectopecten cf. peckhami
Delectopecten cf. peckhami Gabb 1869 scallop
 Nuculanida - Nuculanidae
Nuculana (Crassoleda) miocenica, Nuculana (Nuculana) cuneiformis
 Nuculanida - Sareptidae
"Yoldia suavis" = Megayoldia (Megayoldia) thraciaeformis, Megayoldia (Portlandella) cf. scapha
"Yoldia suavis" = Megayoldia (Megayoldia) thraciaeformis Storer 1838 clam
 Nuculanida - Yoldiidae
Yoldia uvutschensis, Yoldia cf. praeposneri, Yoldia cuneata, Yoldia mediana, Yoldia mira, Yoldia (Yoldia) gackhensis, Yoldia (Yoldia) cf. posneri, Yoldia (Cnesterium) cf. supraoregona