Yaochan, Lutzehsien prosauropod site: Sinemurian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Anchisauridae
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Gyposaurus sinensis
Young 1940
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1 specimen | |||||||||
| IVPP V59, proximal femur | ||||||||||
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Reptilia
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Yunnanosaurus huangi
Young 1940
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Young 1951 | 1 specimen | ||||||||
| IVPP V91, 91a | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Yunnan | County: | Lufeng |
| Coordinates: | 25.7° North, 104.1° East (view map) | ||||
| Paleocoordinates: | 34.5° North, 107.8° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Sinemurian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Sinemurian | ||
| Age range of interval: | 199.50000 - 192.90000 m.y. ago |
Stratigraphy
| Formation: | Lufeng | Member: | Zhangjia'ao | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "Dark Red Beds"
The Lufeng Formation has been divided into lower dark/dull purple beds (= Shawan Member) and upper dark/deep red beds (= Zhangjiawa Member). Luo & Wu (1994: In the Shadow of the Dinosaurs, pp. 251–270) argue on the basis of vertebrate biostratigraphy for a probable Sinemurian age for the Zhangjiawa Member and a Hettangian age for the Shawan Member. | |||||
Lithology and environment
| Primary lithology: | red "siliciclastic" |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Spatial orientation: | random |
| Preservation of anatomical detail: | medium |
| Disassociated major elements: | all |
| Fragmentation: | frequent |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | IVPP |
Metadata
| Database number: | 47081 | ||
| Authorizer: | M. Carrano, R. Butler | Enterer: | M. Carrano, R. Butler |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2005-02-07 13:18:33 | Last modified: | 2023-07-20 14:21:33 |
| Access level: | the public | Released: | 2005-02-07 13:18:33 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 12541. | ETE | C.-C. Young. 1948. Further notes on Gyposaurus sinensis Young. Bulletin of the Geological Society of China 28(1-2):91-103 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
| 43938 | C.-C. Young. 1951. The Lufeng saurischian fauna in China. Palaeontologia Sinica, New Series C 13:1-96 [R. Butler/R. Butler/M. Carrano] |