List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Omeisaurus sp.
Young 1939
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1 individual | |||||||||
| CLGPR v00001 (field no. 17YP3304-S66(5) | ||||||||||
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= Omeisaurus puxiani n. sp.
Tan et al. 2020
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Tan et al. 2020 | |||||||||
| CLGRP V00005 - type; referred specimen - CLGPR v00001 | ||||||||||
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Yuzhoulong qurenensis n. gen., n. sp.
Dai et al. 2022
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Dai et al. 2022 | |||||||||
| CLGRP V00013 - holotype (partial skull and postcranial skeleton) | ||||||||||
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Sauropoda indet.
(Marsh 1878)
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= Shunosaurus lii
Dong et al. 1983
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Ma et al. 2021 | |||||||||
| CLGPR V00007 (field number 17YP5010-S38) - partial postcranial skeleton | ||||||||||
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Reptilia
- Theropoda
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Theropoda indet.
(Marsh 1881)
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Reptilia
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Stegosauria indet.
(Marsh 1877)
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| From Hui et al. 2022: CLGPR V00006-4, partial cranium | ||||||||||
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Bashanosaurus primitivus n. gen., n. sp.
Hui et al. 2022
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Hui et al. 2022 | |||||||||
| Holotype: CLGPR V00006-1, partial skeleton | ||||||||||
| see common names | ||||||||||
Geography
| Country: | China | State/province: | Chongqing | County: | Yunyang |
| Coordinates: | 30.9° North, 108.8° East (view map) | ||||
| Paleocoordinates: | 31.9° North, 112.8° East | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | small collection |
Stratigraphy
| Geological group: | Chongqing | Formation: | Shaximiao | Member: | Lower |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Lower to middle portion of the lower member of the Shaximiao Formation
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 Bathonian, based on zircon U-Pb ages of 166.0 ± 1.5 Ma (Zhou et al. 2022). | |||||
Lithology and environment
| Primary lithology: | red muddy siltstone |
| Secondary lithology: | silty mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "purplish red muddy siltstone and silty mudstone interbedded with siltstone and mudstone" | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -bonebed |
| Size of fossils: | macrofossils |
| Disassociated major elements: | many |
| Disassociated minor elements: | many |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | general faunal/floral analysis | Collection dates: | 2016 |
Metadata
| Also known as: | Puan "Dinosaur Wall"; Yunyang | ||
| Database number: | 205726 | ||
| Authorizer: | M. Carrano, P. Mannion | Enterer: | M. Carrano, G. Varnham, P. Mannion |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2019-10-18 16:55:36 | Last modified: | 2022-11-08 12:44:54 |
| Access level: | the public | Released: | 2019-10-18 16:55:36 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 70522. | C. Tan, H. Dai, J.-J. He, F. Zhang, X.-F. Hu, H.-D. Yu, N. Li, G.-B. Wei, G.-Z. Peng, Y. Ye, Q.-N. Zhang, X.-X. Ren, and H.-L. You. 2019. Discovery of Omeisaurus (Dinosauria: Sauropoda) in the Middle Jurassic Shaximiao Formation of Yunyang, Chongqing, China. Vertebrata PalAsiatica 57(2):105-116 [M. Carrano/M. Carrano] |
Secondary references:
| 83062 | H. Dai, C. Tan, C. Xiong, Q. Ma, N. Li, H. Yu, Z. Wei, P. Wang, J. Yi, G. Wei, H. You and X. Ren. 2022. New macronarian from the Middle Jurassic of Chongqing, China: phylogenetic and biogeographic implications for neosauropod dinosaur evolution. Royal Society Open Science 9:220794 [P. Mannion/P. Mannion] | |
| 81610 | D. Hui, L. Ning, S. C. R. Maidment, W. Guangbiao, Z. Yuxuan, H. Xufeng, M. Qingyu, W. Xunqian, H. Haiqian and P. Guangzhao. 2022. New Stegosaurs from the Middle Jurassic Lower Member of the Shaximiao Formation of Chongqing, China . Journal of Vertebrate Paleontology e1995737 [P. Mannion/G. Varnham] | |
| 77661 | Q. Ma, H. Dai, C. Tan, N. Li, P. Wang, X. Ren, L. Meng, Q. Zhao, G. Wei and X. Xu. 2021. New Shunosaurus (Dinosauria: Sauropoda) material from the middle Jurassic lower Shaximiao Formation of Yunyang, Chongqing, China. Historical Biology [P. Mannion/P. Mannion] | |
| 72052 | C. Tan, M. Xiao, H. Dai, X.-F. Hu, N. Li, Q.-Y. Ma, Z.-Y. Wei, H.-D. Yu, C. Xiong, G.-Z. Peng, S. Jiang, X.-X. Ren, and H.-L. You. 2020. A new species of Omeisaurus (Dinosauria: Sauropoda) from the Middle Jurassic of Yunyang, Chongqing, China. Historical Biology [P. Mannion/P. Mannion] |