Also known as Y. magnus type
Where: Sichuan, China (29.3° N, 105.7° E: paleocoordinates 29.6° N, 110.4° 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; lithology not reported
Size class: macrofossils
Collected by Li, Zhou & Lan in 1973
Collection methods: quarrying, mechanical,
Primary reference: Z. Dong, S. Zhou, and H. Zhang. 1983. [Dinosaurs from the Jurassic of Sichuan]. Palaeontologica Sinica, New Series C, Whole Number 162(23):1-136 [M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 60065: authorized by Matthew Carrano, entered by Matthew Carrano on 28.04.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Yangchuanosaurus magnus n. sp." = Yangchuanosaurus shangyouensis
"Yangchuanosaurus magnus n. sp." = Yangchuanosaurus shangyouensis Dong et al. 1978 allosauroid CV 00216
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