Tianwan village, Heping: Bathonian - Callovian, China
collected by He, Wang, Gao, Zhu, Huang, & Jun 1985
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Metriacanthosauridae
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Yangchuanosaurus hepingensis n. sp.
Gao 1992
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1 individual | |||||||||
| recombined as Sinraptor hepingensis | ||||||||||
| ZDM 00024 (5 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Sichuan | County: | Zigong |
| Coordinates: | 29.4° North, 104.8° East (view map) | ||||
| Paleocoordinates: | 29.4° North, 109.5° 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: 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: | red,blue mudstone |
| Includes fossils? | Y |
| Lithology description: "purple-red mudstones" | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | excellent |
| Articulated whole bodies: | all |
| Fragmentation: | occasional |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (in situ),mechanical,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | He, Wang, Gao, Zhu, Huang, & Jun | Collection dates: | Feb 1985 |
| Collection method comments: Discovered by He Geyin, Wang Fucheng and other farmers from Heping; excavated by Y. Gao, Zhu Shida, Huang Daxi, and Jun Jichuan | |||
Metadata
| Also known as: | Zigong | ||
| Database number: | 89156 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2009-05-07 14:49:43 | Last modified: | 2022-10-11 14:23:21 |
| Access level: | the public | Released: | 2009-05-07 14:49:43 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 10371. | 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] |
Secondary references:
| 82845 | G. Peng, Y. Ye, Y. Gao, C. Shu, and S. Jiang. 2005. Zìgòng dìqū zhū luó jì kǒnglóng dòngwù qún [Jurassic Dinosaur Faunas in Zigong]. 1-236 [M. Carrano/M. Carrano] | |
| 60851 | L.-d. Xing, H. Dong, G.-z. Peng, C.-k. Shu, X.-d. Hu and H. Jiang. 2009. A scapular fracture in Yangchuanosaurus hepingensis (Dinosauria: Theropoda). Geological Bulletin of China 28(10):1390-1395 [M. Carrano/M. Carrano] |