Where: Jilin, China (43.7° N, 126.3° E: paleocoordinates 13.7° S, 116.4° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Zhangjiatun Formation, Ludlow (427.4 - 423.0 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. "Fossils are chiefly from the lower part of the unit...This formation is overlain by Quaternary rocks, and the base is unknown. We conclude that the formation is of Ludlow age."

• formation-level stratigraphic resolution

Environment/lithology: marine; gray, argillaceous mudstone and tuffaceous, yellow sandstone

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 27913: authorized by Michael Foote, entered by Michael Foote on 16.01.2003

Creative Commons license: CC BY (attribution)