near Yangyuan Village, Zhenghe: Late/Upper Kimmeridgian - Early/Lower Tithonian, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Allochoristodera indet.
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Reptilia
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Fujianvenator prodigiosus n. gen., n. sp.
Xu et al. 2023
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| IVPP V31985 | ||||||||||
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Reptilia
- Testudines
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Testudines indet.
(Batsch 1788)
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Actinopteri
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Teleostei indet.
(Müller 1846)
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| see common names | ||||||||||
Geography
| Country: | China | State/province: | Fujian | County: | Zhenghe |
| Coordinates: | 27.1° North, 119.0° East (view map) | ||||
| Paleocoordinates: | 29.5° North, 123.1° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Late/Upper Jurassic |
| Key time interval: | Late/Upper Kimmeridgian - Early/Lower Tithonian | ||
| Age range of interval: | 152.20000 - 146.30000 m.y. ago | ||
| Age estimate: | 150 ± 1.8 to 148 ± 1.9 Ma (U/Pb) |
Stratigraphy
| Formation: | Nanyuan | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Xu et al., 2023: Samples were collected from the tuffite layers deposited below (PM702-1) and above (PM701-4) the IVPP V31985-bearing horizon (Fig. 4a). We also collected ignimbrite samples that underlie (Bdx03) and overlie (Bdx04) the fossil-bearing sediments. Those samples were used in the zircon U-Pb dating experiments to obtain ages for the IVPP V31985-bearing horizon and the duration of the Zhenghe Fauna. Zircon samples were dated using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) at the Testing Center of Shandong Bureau of China Metallurgical Geology Bureau, using a Thermo Fisher Scientific X2 ICP-MS connected to a GeoLas Pro 193-nm laser ablation system. The detailed experimental procedure is outlined in ref. 65. Measurements were taken using Zircon 91500 as the external standard with a 207Pb/235U age of 1063.35 Ma, and a 206Pb/238U age of 1062.4 Ma. Elemental contents were calculated with NIST610 as the external standard and Zr as the internal standard. The U-Pb isotope ratios and contents were calculated using the software ICPMSDataCal. Isoplot (v.3.0) was used to plot the concordia diagram and to calculate the weighted mean U-Pb age66. The laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) method of dating produced concordant zircon U-Pb ages of 150.2 ± 1.1 Ma (PM702-1) and 149.9 ± 1.1 Ma (PM701-4) for the lower and upper layers of the IVPP V31985-bearing horizons, respectively (Extended Data Fig. 10). Concordant zircon U-Pb ages of 150 ± 1.8 Ma (Bdx03) and 148 ± 1.9 Ma (Bdx04) were obtained from the ignimbrite samples. Together, these results constrain the Zhenghe Fauna to a time interval of 148–150 Ma. | |||||
Lithology and environment
| Primary lithology: | black carbonaceous mudstone |
| Secondary lithology: | tuff |
| Includes fossils? | Y |
| Lithology description: Xu et al., 2023: The deposits are mainly composed of black carbonaceous mudstone and shale, interstratified with tuffite (at least four tuffite layers were recognized) (Fig. 4a). | |
| Environment: | mire/swamp |
| Geology comments: Xu et al., 2023: The lithofacies and the vertebrate assemblage of the Zhenghe Fauna, which is dominated by aquatic and semi-aquatic animals, indicate that these fossiliferous sediments represent lacustrine swamp deposits. | |
Taphonomy
| Modes of preservation: | body,adpression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,surface (in situ),field collection |
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Also known as: | Daxi Basin | ||
| Database number: | 231775 | ||
| Authorizer: | E. Dunne, M. Carrano | Enterer: | E. Tasimov, M. Carrano |
| Modifier: | M. Carrano | ||
| Created: | 2023-09-07 17:18:35 | Last modified: | 2023-09-12 12:33:38 |
| Access level: | the public | Released: | 2023-09-07 17:18:35 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 85758. | L. Xu, M. Wang, R. Chen, L. Dong, M. Lin, X. Xu, J. Tang, H. You, G. Zhou, L. Wang, W. He, Y. Li, C. Zhang and Z. Zhou. 2023. A new avialan theropod from an emerging Jurassic terrestrial fauna. Nature [E. Dunne/E. Tasimov] |