Where: Qinghai, China (37.5° N, 99.3° E: paleocoordinates 29.8° N, 81.1° E)

• coordinate stated in text

• local area-level geographic resolution

When: Dajialian Formation, Anisian (247.2 - 242.0 Ma)

• Upper Dajialian Formation. The top c. 15-20 m of the limestone unit is highly fossiliferous, and the brachiopod specimens are preserved as carbonate shells. Below those bioclastic limestones are micrites intercalated with cherty layers. Specimens with silicified shells including brachiopods and bivalves are common in this part of the Dajialian Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Collection methods: Repository: State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan, China

Primary reference: Z. Guo, Z. Q. Chen, Y. G. Huang, H. F. Chen, Y. M. Qiu and X. Guo. 2022. The Anisian (Middle Triassic) brachiopods from the southern Qilian Mountains, north-western China. Papers in Palaeontology 8(e1468) [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 227942: authorized by Matthew Clapham, entered by Matthew Clapham on 11.11.2022

Creative Commons license: CC BY (attribution)