Where: Jilin Provence, China (42.1° N, 126.7° E: paleocoordinates 3.4° N, 139.2° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Cordylodus proavus conodont zone, Niuchehean (489.5 - 485.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size classes: macrofossils, mesofossils

Collection methods: Trilobites and Conodonts only, Collected in the Xiaoyangqiao Central section, collection 10A(1-6), 27m from the base of the formation

Primary reference: J.-W. Chen, Y.-Y. Qian, J.-M. Zhang, Y.-K. Lin, L.-M. Yin, Z.-H. Wang, Z.-Z. Wang, J.-D. Yang, and Y.-X. Wang. 1988. The recommended Cambrian - Ordovician global Boundry stratotype of the Xiaoyangqiao section (Dayangcha, Jilin Province), China. In W. B. Harland, C. P. Hughes, R. S. J. Sparks, N. H. Woodcock, I. N. McCave (eds.), Geological Magazine 125(4):415-444 [M. Hopkins/S. Mahmood/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 156924: authorized by Melanie Hopkins, entered by Shaun Mahmood on 02.06.2014

Creative Commons license: CC BY (attribution)