List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Testudines
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Sinaspideretes wimani
Young and Chow 1953
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1 specimen | |||||||||
| CQMNH C.1000 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Sichuan |
| Coordinates: | 30.5° North, 105.6° East (view map) | ||
| Paleocoordinates: | 30.6° North, 110.0° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | local area |
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: | not reported |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Chongqing Museum of Natural History | Collection dates: | 1977 |
Metadata
| Database number: | 179921 | ||
| Authorizer: | P. Holroyd | Enterer: | P. Holroyd |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2016-07-04 00:53:06 | Last modified: | 2022-05-06 03:38:24 |
| Access level: | the public | Released: | 2016-07-04 00:53:06 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 59686. | H. Tong, L. Li, and H. Ouyang. 2014. A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China. Geological Magazine 151(4):600-610 [P. Holroyd/P. Holroyd/M. Uhen] |