NJ673, Yijianfang section, Bachu area (Ordovician of China)

Where: Xinjiang, China (40.2° N, 78.9° E: paleocoordinates 35.4° S, 112.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tumuxiuke Formation, Katian (453.0 - 445.2 Ma)

• collection from upper-middle of section labeled beds 39-42

Environment/lithology: offshore shelf; lithified, shelly/skeletal, gray grainstone and lithified, gray limestone

• shallow outer-shelf slope environment with depth slightly more than 70 m, just below storm wave base
• Collection from 92.2 m section of grey thin-bedded calcirudites and 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 188387: authorized by Melanie Hopkins, entered by Melanie Hopkins on 30.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Cheiruridae
Skelipyx lata Zhang 1981 trilobite