Where: Heibei Provence, China (41.0° N, 117.8° E: paleocoordinates 6.0° S, 132.9° E)

• coordinate estimated from map

When: Upper Member (Yehli Formation), Tremadoc (486.5 - 477.7 Ma)

• 20-50m thick , has nearly the same geographical distrobution as the Liangchiashan formation. Fauna allows correlation of the Upper Yehli formation with Upper Tremadoc equvalents

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, green, yellow limestone

Size classes: macrofossils, mesofossils

Preservation: cast

Collection methods: Trilobites only; Upper Yehli formation, location 12 horizon 2, Hebei provence, China

Primary reference: Z. Zhou and R. A. Fortey. 1986. Ordovician trilobites from north and northeastern China. Palaeontographica Abteilung A 192:157-210 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 157265: authorized by Melanie Hopkins, entered by Shaun Mahmood on 11.06.2014

Creative Commons license: CC BY (attribution)