ammonites
Nemnekey Section, upper half of bioherm [Sunagin Mbr, Pestrotsvet Fm] (Cambrian of Russian Federation)

Also known as Reef 1831

Where: Siberia, Russian Federation (57.2° N, 132.0° E: paleocoordinates 14.6° S, 17.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Anabarites trisulcatus small shelly zone, Pestrotsvet Formation, Nemakit-Daldynian (542.0 - 530.0 Ma)

• Dokidocyathus regularis zone. AGE: Nemakit-Daldynian; refined by A. Hendy (6/2009) on the basis of biostratigraphic data (= Anabarites trisulcatus zone).

• bed-level stratigraphic resolution

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

• varriegated limestone with archaeocyathan bioherms (from key)

Size class: macrofossils

Primary reference: V. V. Khomentovsky and G. A. Karlova. 1993. Biostratigraphy of the Vendian-Cambrian beds and the lower Cambrian boundary in Siberia. Geological Magazine 130(1):29-45 [P. Wagner/P. Wagner/P. Wagner] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 50419: authorized by Pete Wagner, entered by Pete Wagner on 14.05.2005