Also known as Zigong
Where: Sichuan, China (29.4° N, 104.8° E: paleocoordinates 29.4° N, 109.5° E)
• coordinate based on nearby landmark
• 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; red, blue mudstone
Size class: macrofossils
Collected by He, Wang, Gao, Zhu, Huang, & Jun in 1985
Collection methods: surface (in situ), mechanical,
• Discovered by He Geyin, Wang Fucheng and other farmers from Heping; excavated by Y. Gao, Zhu Shida, Huang Daxi, and Jun Jichuan
Primary reference: Y. Gao. 1992. Yangchuanosaurus hepingensis – a new species of carnosaur from Zigong, Sichuan. Vertebrata PalAsiatica 30(4):313-324 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 89156: authorized by Matthew Carrano, entered by Matthew Carrano on 07.05.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Yangchuanosaurus hepingensis n. sp." = Sinraptor hepingensis
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