Where: Shaanxi, China (34.8° N, 106.9° E: paleocoordinates 38.9° N, 84.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Yanchang Formation, Ladinian (242.0 - 237.0 Ma)

• Most authors have indicated that the Tongchuan Formation should be abolished as it has no distinctive lithostratigraphic criteria by which it can be separated from the Yanchang Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Tianjin Institute of Geology and Mineral Resources (for insects); Xi'an Institute of Geology and Mineral Resources (for conchostracans and plants)

Primary reference: Z. J. Liu, S. T. Liu, and Y. C. Hong. 1985. Discovery and studying of the Triassic fauna and flora from the Niangniangmiao in Longxian, Shaanxi. Bulletin of the Xi'an Institute of Geology and Mineral Resources 10:105-120 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 165602: authorized by Matthew Clapham, entered by Matthew Clapham on 23.01.2015

Creative Commons license: CC BY (attribution)