Xingyi (Middle Triassic) (Triassic to of China)

Where: Guizhou, China (25.1° N, 104.8° E: paleocoordinates 11.3° N, 94.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pelsonian to Pelsonian (247.2 - 242.0 Ma)

• Yang & Xu do not give any information other than "Middle Triassic" so a middle-late Anisian age is assigned by extrapolation from the occurrences at Qingyan.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, green, yellow shale and lithified, gray marl

• Evaporative basin in Sichuan and north Guizhou separated from open marine to south in Yunnan and Guangxi by biohermal belt, located just north of Qingyan. The area near Qingyan was a prebiohermal facies. (Apparently fore-reef or something equivalent, located on the slope?)
• Qingyan Formation consists mainly of gray to yellowish-green noncalcareous shale, pale-to dark-gray marl, calcareous shale, and argillaceous limestone, usually thin-bedded. Most of the fossils are collected from the shale and marl.

Size class: macrofossils

Primary reference: T. Y. Yang and G. R. Xu. 1966. Triassic Brachiopods of Central Guizhou Province 1-151 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152025: authorized by Matthew Clapham, entered by Matthew Clapham on 03.11.2013, edited by Nicole Bonuso

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Rhynchonellida - Cyclothyrididae
"Septaliphoria xingyiensis n. sp." = Costirhynchopsis xingyiensis
"Septaliphoria xingyiensis n. sp." = Costirhynchopsis xingyiensis Yang and Xu 1966