Where: Kazakhstan (43.8° N, 75.4° E: paleocoordinates 15.7° S, 73.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Normalograptus persculptus graptolite zone, Durben Member (Zhalair Formation), Hirnantian (445.2 - 443.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, green mudstone and fine-grained sandstone

Size class: macrofossils

Primary reference: M. K. Apollonov, T. N. Koren, I. F. Nikitin, L. M. Paletz, and D. T. Tzai. 1988. Nature of the Ordovician-Silurian boundary in south Kazakhstan, USSR. Bulletin of the British Museum (Natural History), Geology 43:145-154 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 153086: authorized by Pete Wagner, entered by Pete Wagner on 06.12.2013

Creative Commons license: CC BY (attribution)