Wujiaba Dam Quarry, Zigong (Jurassic to of China)

Also known as Shaheba

Where: Sichuan, China (28.4° N, 104.8° E: paleocoordinates 28.4° N, 109.9° E)

• coordinate estimated from map

• 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 classes: macrofossils, mesofossils

Collected in 1974

Collection methods: quarrying, mechanical,

Primary reference: L.-h. Hou, S.-w. Zhou, and S.-c. Chao. 1976. [New discovery of sauropod dinosaurs from Sichuan]. Vertebrata PalAsiatica 14(3):160-165 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51914: authorized by Matthew Carrano, entered by Matthew Carrano on 01.07.2005, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia -
Tuojiangosaurus multispinus n. gen. n. sp.2 Dong et al. 1977 ornithischian
CV 00209, 00210
 Theropoda -
Szechuanosaurus yandonensis n. sp.1 Dong et al. 1978 theropod
CV 00214
 Saurischia -
"Zigongosaurus fuxiensis n. gen. n. sp." = Mamenchisaurus fuxiensis
"Zigongosaurus fuxiensis n. gen. n. sp." = Mamenchisaurus fuxiensis Hou et al. 1976 sauropod
CV 00226, ZMSI 001
 Saurischia - Mamenchisauridae
Omeisaurus fuxiensis n. sp.2 Dong et al. 1983 mamenchisaurid
CV 00267