ammonites
Sukharikha River, bioherms (Cambrian of Russian Federation)

Also known as Reef 3756

Where: Krasnoyarskiy Kray, Russian Federation (67.2° N, 87.0° E: paleocoordinates 21.5° S, 0.5° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lapworthella bella small shelly zone, Krasnoporog Formation, Atdabanian (520.0 - 516.0 Ma)

• 12.5-14.5 m above the base of the formation, lowermost Atdabanian

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• patch reefs in the back-reef lagoon
• two 1 m thick layers of pink lime mudstone with irregularly shaped archaeocyath-calcibiont bioherms

Size class: macrofossils

Primary reference: S. M. Rowland, V. A. Luchinina, I. V. Korovnikov, D. P. Sipin, A. I. Tarletskov and A. V. Fedoseev. 1998. Biostratigraphy of the Vendian-Cambrian Sukharikha River section, northwestern Siberian Platform. Canadian Journal of Earth Sciences 35(4):339-352 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 80843: authorized by Wolfgang Kiessling, entered by Uta Merkel on 15.05.2008