Where: Hubei, China (30.9° N, 110.4° E: paleocoordinates 15.1° N, 140.3° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Baltoniodus triangularis conodont zone, Lower Member (Dawan Formation), Floian (477.7 - 470.0 Ma)

• Proposed as base of Dapingian, but this was later rejected.

• bed-level stratigraphic resolution

Environment/lithology: nodular, gray, green shale and nodular limestone

Size classes: macrofossils, mesofossils

Primary reference: X. Wang, S. Stouge, C. Xiaohong, L. Zhihong, W. Chuanshang, S. C. Finney, Z. Qingluan, Z. Zhiqiang, C. Huiming and B. D. Erdtmann. 2009. The global stratotype section and point for the base of the Middle Ordovician Series and the Third Stage (Dapingian). Episodes 32(2):96-112 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 203694: authorized by Pete Wagner, entered by Pete Wagner on 21.08.2019

Creative Commons license: CC BY (attribution)