Where: Sakhalin, Russian Federation (47.2° N, 142.5° E: paleocoordinates 54.0° N, 132.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bykov Formation, Coniacian to Coniacian (89.8 - 83.6 Ma)

• in Japanese literature: Upper Yezo Group (aka Upper Ammonite Beds, Hobetsu Shale)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: M. Eguchi. 1951. Mesozoic hexacorals from Japan. The Science Reports of the Tohoku University, Geology 24:1-96 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 91352: authorized by Wolfgang Kiessling, entered by Uta Merkel on 16.09.2009

Creative Commons license: CC BY (attribution)