Where: Xizang, China (31.6° N, 84.6° E: paleocoordinates 15.6° S, 64.0° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Xiala Formation, Changhsingian (254.2 - 252.2 Ma)
• In conclusion, 10 of 17 species generally suggest Lopingian age except for four indeterminate species. Notably, Spinomarginifera chengyaoyenensis with a Changhsingian age accounts for approximately half of the total quantity of brachiopods. Therefore, this fauna can be assigned to the Changhsingian age based on the brachiopods and their co-occurring foraminifers Colaniella parva (Colani, 1924) and Reichelina pulchra Miklukho-Maklay, 1954.
• bed-level stratigraphic resolution
Environment/lithology: lithified limestone
Size class: macrofossils
Reposited in the NIGPAS
Primary reference: H. P. Xu, Y. C. Zhang, F. Qiao and S. Z. Shen. 2019. A new Changhsingian brachiopod fauna from the Xiala Formation at Tsochen in the central Lhasa Block and its paleogeographical implications. Journal of Paleontology 93:876-898 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 203188: authorized by Matthew Clapham, entered by Matthew Clapham on 05.08.2019
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Linoproductus cora d'Orbigny 1842 | |
Spinomarginifera chengyaoyenensis Huang 1932 | |
Rhynchonellata | |
Acosarina minuta Abich 1878 |