Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
| Country: | China | State/province: | Sichuan | County: | Quxian |
| Coordinates: | 30.8° North, 107.0° East (view map) | ||||
| Paleocoordinates: | 31.3° North, 111.2° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Stratigraphy
| Geological group: | Chongqing | Formation: | Shaximiao | Member: | Upper |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: upper part of formation
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). | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Y. Guan, A. Wang | Collection dates: | 1957, 1978 |
| Collection method comments: collected in 1957 by Yaowu Guan of the Sichuan Regional Petroleum Exploration Office from Taipingzhai. In November of 1978, Angui Wang from the QuxianCounty Hydroelectric Office noted numerous occurrences of fossil bone at the locality thatproduced Chialingosaurus. Re-excavation was thereby undertaken by a consortium includingShiwu Zhou from the Chunking Natural History Museum, Xingyao Li from the Quxian CountyCultural Office, and Shengquan Xu of the Hydroelectric Office | |||
Metadata
| Also known as: | Quxian | ||
| Database number: | 93728 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2010-01-30 22:20:53 | Last modified: | 2022-05-06 03:37:05 |
| Access level: | the public | Released: | 2010-01-30 22:20:53 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 17258. | ETE | 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] |