Honghe Dam, Hongheba: Bajocian, China
collected by He 1972/1979
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Yandusaurus hongheensis n. gen., n. sp.
He 1979
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1 individual | |||||||||
| GCC V20501 (4 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Sichuan |
| Coordinates: | 29.4° North, 104.8° East (view map) | ||
| Paleocoordinates: | 30.1° North, 109.9° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Altitude: | 456 meters | ||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Bajocian | 10 m.y. bin: | Jurassic 4 |
| Key time interval: | Bajocian | ||
| Age range of interval: | 170.9 - 168.2 m.y. ago |
Stratigraphy
| Geological group: | Chongqing | Formation: | Shaximiao | Member: | Lower |
| 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 |
| Preservation of anatomical detail: | good |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | He | Collection dates: | 1972/1979 |
Metadata
| Also known as: | Hongheba | ||
| Database number: | 57061 | ||
| Authorizer: | M. Carrano | Enterer: | K. Maguire |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-12-01 12:48:16 | Last modified: | 2022-10-11 14:33:32 |
| Access level: | the public | Released: | 2005-12-01 12:48:16 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 15058. | ETE | X. He and K. Cai. 1984. The Middle Jurassic dinosaur fauna from Dashanpu, Zigong, Sichuan. Vol. I. The ornithopod dinosaurs. Sichuan Scientific and Technological Publishing House, Chengdu 1-71 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 16608 | ETE | P. M. Barrett, R. J. Butler, and F. Knoll. 2005. Small-bodied ornithischian dinosaurs from the Middle Jurassic of Sichuan, China. Journal of Vertebrate Paleontology 25(4):823-834 [M. Carrano/M. Carrano/M. Carrano] |
| 62944 | Q. He. 1984. Dinosaur finds. China Reconstructs 33(3):68-69 [M. Carrano/M. Carrano] | |
| 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] |