NJ689, 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)

• collected from middle of bed 46

Environment/lithology: reef, buildup or bioherm; lithified, massive, white limestone

• platform-margin carbonate buildup
• Collection from 10 m section of greyish white massive calcirudites

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 188391: authorized by Melanie Hopkins, entered by Melanie Hopkins on 30.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
Dulanaspis asper n. sp. Zhou et al. 2014 trilobite
 Corynexochida - Illaenidae
Illaenus usitatus n. sp. Zhou et al. 2014 trilobite
 Lichida - Lichidae
"Lichidae" indet. Hawle and Corda 1847 trilobite