Where: Russian Federation (62.3° N, 175.2° E: paleocoordinates 64.4° N, 178.4° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Ionayskaya Formation, Oligocene (33.9 - 23.0 Ma)

• Most part of the suite enters into the Alugin Horizon in Koryak Upland and northeastern Kamchatka.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, cherty/siliceous siltstone and lithified sandstone

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 50122: authorized by Wolfgang Kiessling, entered by Sabine Nürnberg on 09.05.2005

Creative Commons license: CC BY (attribution)