Pinganxiang, Yongxing (Jurassic to of China)

Also known as Quxian

Where: Sichuan, China (30.8° N, 107.0° E: paleocoordinates 31.3° N, 111.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Upper Member (Shaximiao Formation), Bathonian to Bathonian (168.3 - 163.5 Ma)

• upper part of formation

•Several radiometric ages have been reported for the Shaximiao Formation, including 167 Ma or 172 Ma (Zong and Shi, 1997), 167–172 Ma or 178–169 Ma (Gou et al., 2000), 163±3 Ma (Li et al., 2010), 160±4 Ma (Luo et al., 2014), 158±7 Ma (Qian et al., 2016), and 159±2 Ma (Wang et al., 2018). However, more recent studies suggest an older age; Dai et al. 2022 reported a maximum depositional age for the bone-bearing layers of the lower member of the Shaximiao formation to be Bjaocan. Zhou et al. 2022 also supported a late Middle Jurassic age for the Shaximiao Formation (Bathonian-Callovian).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Y. Guan, A. Wang in 1957, 1978

• collected in 1957 by Yaowu Guan of the Sichuan Regional Petroleum Exploration Office from Taipingzhai. In November of 1978, Angui Wang from the QuxianCounty Hydroelectric Office noted numerous occurrences of fossil bone at the locality thatproduced Chialingosaurus. Re-excavation was thereby undertaken by a consortium includingShiwu Zhou from the Chunking Natural History Museum, Xingyao Li from the Quxian CountyCultural Office, and Shengquan Xu of the Hydroelectric Office

Primary reference: Z. Dong, S. Zhou, and H. Zhang. 1983. [Dinosaurs from the Jurassic of Sichuan]. Palaeontologica Sinica, New Series C, Whole Number 162(23):1-136 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93728: authorized by Matthew Carrano, entered by Matthew Carrano on 30.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list