Genus: Protoxinjiangchelys TONG, DANILOV, YE, OUYANG & PENG, 2012
Etymology: Latin, proto, "first or primitive" + Xinjiangchelys; in reference to its primative status relative to Xinjiangchelys.

Species: salis TONG, DANILOV, YE, OUYANG & PENG, 2012
= Chengyuchelys cf. zigongensis YE, 1994
Etymology: Latin, salis, "salt"; in reference to the underground salt mine in the Zigong area.

Holotype: ZDM 3009

Locality: Dashanpu (Dashanpu Dinosaur Quarry), lat. 29°5’N, long. 104°50’E, situated 11 km east of Zigong City, 250 km south of Chengdu, Hechuan County, Sichuan Basin, Sichuan (Szechwan) Province, China.

Horizon: Xaishaximiao (Shaximiao) Formation.

Biostratigraphy:

Age: Bathonian-Callovian Stage (DONG & TANG, 1984), Middle-Upper Dogger Epoch, Middle Jurassic.
Note: Bajocian (CHEN et al. 1982), Lower Middle Dogger Epoch, Middle Jurassic.

Material: A complete shell wiht articulated carapace and plastron.