Where: Xinjiang, China (40.2° N, 78.9° E: paleocoordinates 31.1° S, 117.8° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Undulograptus austrodentatus graptolite zone, Middle Member (Yijianfang Formation), Darriwilian (467.3 - 458.4 Ma)

• middle of bed 32. Reef beds are in the middle member.

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, gray reef rocks and lithified chert

Size class: macrofossils

Collected in 1987; reposited in the NIGPAS

Collection methods: surface (in situ), mechanical,

• Collection made as part of an extensive field investigation of the periphery of the Tarim Basin by geologists of the Nanjing Institute of Geology and Palaeontology, Academia Sinica, and the 05 Project Administration, Bureau of Petroleum Geology of Southwest China.

Primary reference: Z. Zhou, G. Yin, and Z. Zhou. 2014. Ordovician (Darriwilian-early Katian) trilobite faunas of northwestern Tarim, Xinjiang, China. Memoirs of the Association of Australasian Palaeontologists 46:1-142 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 188380: authorized by Melanie Hopkins, entered by Melanie Hopkins on 30.08.2017

Creative Commons license: CC BY (attribution)