NJ664, Yijianfang section, Bachu area (Ordovician of China)

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: Tumuxiuke Formation, Llanvirn (466.0 - 460.9 Ma)

• middle of bed 36

Environment/lithology: offshore shelf; lithified, shelly/skeletal, yellow grainstone

• shallow outer-shelf slope environment with depth slightly more than 70 m, just below storm wave base
• Collection from 4.8 m section of apricot-yellow biocalcarenites

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 188382: authorized by Melanie Hopkins, entered by Melanie Hopkins on 30.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Cheiruridae
Xystocrania sp. Whittington 1965 trilobite