Where: Gansu, China (34.0° N, 103.0° E: paleocoordinates 36.7° S, 127.0° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Zhouqu Formation, Wenlock (433.4 - 427.4 Ma)

• Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. Two faunas found in the lower part of the formation: a graptolitic fauna, and shelly fauna just below it. Based on fossils, authors infer Wenlockian age.

• member-level stratigraphic resolution

Environment/lithology: marine; gray sandstone and cherty/siliceous limestone

Primary reference: E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27914: authorized by Michael Foote, entered by Michael Foote on 16.01.2003

Creative Commons license: CC BY (attribution)