Also known as Hongkongochelys yehi type

Where: Sichuan, China (29.6° N, 105.1° E: paleocoordinates 29.6° N, 109.7° E)

• coordinate based on political unit

• small collection-level geographic resolution

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

• 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

Primary reference: Y. Ye. 1999. A new genus of Sinemydidae from the Late Jurassic of Neijiang, Sichuan. Vertebrata PalAsiatica 37(2):81-87 [P. Mannion/P. Mannion/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 139603: authorized by Philip Mannion, entered by Philip Mannion on 14.02.2013

Creative Commons license: CC BY (attribution)