Longjiawa, Anyue: Late/Upper Aptian, China
collected 1987
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Metriacanthosauridae
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Yangchuanosaurus sp.
Dong et al. 1978
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1 individual | |||||||||
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Reptilia
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Mamenchisaurus anyuensis
He et al. 1996
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6 individuals | |||||||||
| AL002, AL003, AL101-106. | ||||||||||
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Reptilia
- Testudines
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Chelonia indet.
(Latreille 1800)
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1 specimen | |||||||||
| synonym of Testudines | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Sichuan | County: | Anyue |
| Coordinates: | 30.2° North, 105.3° East (view map) | ||||
| Paleocoordinates: | 29.1° North, 109.1° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 329 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| 10 m.y. bin: | Cretaceous 2-3 | ||
| Key time interval: | Late/Upper Aptian | ||
| Age range of interval: | 119.50000 - 113.00000 m.y. ago | ||
| Age estimate: | 114.4 ± 1.1 Ma (U/Pb) |
Stratigraphy
| Formation: | Suining | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: near top of formation, just beneath contact with Penglaizheng
Wang et al. (2019) provide detrital zircon U/Pb mean ages of 114.4±1.1 Ma | |||||
Lithology and environment
| Primary lithology: | red mudstone |
| Includes fossils? | Y |
| Lithology description: "purple-red mudstone' | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | some |
| Associated major elements: | some |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis | Collection dates: | 1987 |
Metadata
| Database number: | 58977 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2006-03-02 06:30:12 | Last modified: | 2021-04-14 08:10:44 |
| Access level: | the public | Released: | 2006-03-02 06:30:12 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 47184. | X. He, S. Yang, K. Cai, K. Li, and Z. Liu. 1996. [A new species of sauropod, Mamenchisaurus anyuensis sp. nov.]. Papers on Geosciences Contributed to the 30th International Geological Congress 83-86 [M. Carrano/M. Carrano] |
Secondary references:
| 16721 | ETE | H. Ouyang and Y. Ye. 2002. The first mamenchisaurian skeleton with complete skull: Mamenchisaurus youngi. Sichuan Science and Technology Press, Chengdu 1-111 [M. Carrano/M. Carrano] |
| 76407 | J. Wang, M. A. Norell, R. Pei, Y. Ye, and S.-C. Chang. 2019. Surprisingly young age for the mamenchisaurid sauropods in South China. Cretaceous Research 104:104176:1-9 [P. Mannion/P. Mannion] |