Where: Russian Federation (50.2° N, 155.3° E: paleocoordinates 69.4° N, 174.6° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Naiba Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)

• STRATIGRAPHIC RELATIONS: From "Member 4" of the Naiba Fm, which is overlain by the Bykov Fm (Turonian). AGE: late Early-Middle Cenomanian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From near base of regional section.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, sandy mudstone

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Yazkova

• COLLECTORS: Authors, Yazkova, Peryt, Zonova, and Kasintzova. REPOSITORY: Specimens studied are housed in the VSEGEI (Vserosyjskij, Nauchno-Issledovatelskij Geologicheskij Institut – All Russian

•Science Research Geological Institute) Museum (Saint Petersburg, Russia), at the University of Silesia, Faculty of Earth Sciences (Sosnowiec, Poland), and at the Institute of Paleobiology, Polish Academy of Sciences (Warsaw).

Primary reference: E. A. Yazykova, D. Peryt, and T. D. Zonovia. 2004. The Cenomanian/Turonian boundary in Sakhalin, Far East Russia: ammonites, inoceramids, foraminifera, and radiolarians. New Zealand Journal of Geology and Geophysics 47:291-320 [A. Hendy/A. Hendy/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84221: authorized by Austin Hendy, entered by Austin Hendy on 27.09.2008

Creative Commons license: CC BY (attribution)