NJ686, 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: Lianglitag Formation, Katian (453.0 - 445.2 Ma)

Environment/lithology: reef, buildup or bioherm; lithified, massive, gray, argillaceous limestone and lithified reef rocks

• platform-margin carbonate buildup
• Collection from 31.5 m section of greyish white and purple thick-bedded to massive argillaceous calcirudites and algae-bioconstructed limestones

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 188388: authorized by Melanie Hopkins, entered by Melanie Hopkins on 30.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
Eokosovopeltis expansus n. sp. Zhou et al. 2014 trilobite
Dulanaspis asper Zhou et al. 2014 trilobite