Also known as Puan "Dinosaur Wall"; Yunyang

Where: Chongqing, China (30.9° N, 108.8° E: paleocoordinates 31.9° N, 112.8° E)

• coordinate based on political unit

• small collection-level geographic resolution

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

• Lower to middle portion of the lower member of the Shaximiao 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 Bathonian, based on zircon U-Pb ages of 166.0 ± 1.5 Ma (Zhou et al. 2022).

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; red, muddy siltstone and silty mudstone

Size class: macrofossils

Collected in 2016

Collection methods: surface (in situ),

Primary reference: C. Tan, H. Dai, J.-J. He, F. Zhang, X.-F. Hu, H.-D. Yu, N. Li, G.-B. Wei, G.-Z. Peng, Y. Ye, Q.-N. Zhang, X.-X. Ren, and H.-L. You. 2019. Discovery of Omeisaurus (Dinosauria: Sauropoda) in the Middle Jurassic Shaximiao Formation of Yunyang, Chongqing, China. Vertebrata PalAsiatica 57(2):105-116 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 205726: authorized by Matthew Carrano, entered by Matthew Carrano on 18.10.2019, edited by Grace Varnham and Philip Mannion

Creative Commons license: CC BY (attribution)