Where: Guizhou, China (26.5° N, 108.0° E: paleocoordinates 7.2° N, 126.2° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Upper Wengxiang Formation, Sheinwoodian (433.4 - 430.5 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. "Based on these fossils, an early Wenlock age is assigned to the [Up. W. Fm.], and it is correlated with the Xiushan Formation." Position on correlation chart suggests zonation consistent with Sheinwoodian age.

• member-level stratigraphic resolution

Environment/lithology: marine; gray, green, yellow shale and marl

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 27792: authorized by Michael Foote, entered by Michael Foote on 09.01.2003

Creative Commons license: CC BY (attribution)