First Occurrence of Wronascolex sp. (Palaeoscolecida, Priapulida) in the Cambrian Tianpeng Formation (Wuliuan Stage), Southeastern Yunnan, South China: Implications for a New Burgess Shale-Type Lagerstätte
Abstract
1. Introduction
2. Geological Setting
3. Materials and Methods
3.1. Material
3.2. Methods
4. Systematic Paleontology
5. Characteristics of Fossil Preservation
6. Geochemical Data
| Compositions | K2O | Al2O3 | CaO | TFe2O3 | MgO | Na2O | SiO2 | MnO | P2O5 | TiO2 | V | Co | Ni | Cu | Zn |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % | % | % | % | % | % | % | % | % | % | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | |
| B1 | 5.74 | 19.94 | 0.26 | 5.74 | 1.89 | 0.17 | 59.01 | 0.02 | 0.11 | 0.83 | 126.00 | 13.60 | 47.10 | 40.20 | 82.80 |
| B2 | 4.15 | 13.67 | 0.11 | 4.55 | 1.42 | 0.17 | 70.78 | 0.03 | 0.12 | 0.76 | 87.70 | 11.40 | 34.90 | 17.80 | 50.40 |
| B3 | 4.71 | 13.31 | 0.23 | 4.42 | 1.85 | 0.15 | 69.67 | 0.03 | 0.17 | 0.74 | 105.00 | 12.70 | 29.50 | 12.70 | 57.80 |
| compositions | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y |
| 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | 10−6 | |
| B1 | 57.80 | 91.30 | 11.80 | 41.10 | 6.31 | 1.11 | 5.11 | 0.81 | 4.57 | 0.90 | 2.75 | 0.42 | 2.68 | 0.41 | 23.50 |
| B2 | 48.60 | 93.90 | 11.20 | 41.60 | 7.64 | 1.39 | 6.66 | 1.05 | 5.84 | 1.13 | 3.38 | 0.52 | 3.30 | 0.53 | 27.30 |
| B3 | 64.90 | 126.00 | 14.90 | 55.50 | 10.20 | 1.81 | 9.07 | 1.37 | 7.29 | 1.40 | 4.15 | 0.63 | 3.86 | 0.62 | 37.50 |
6.1. Analytical Methods and Proxy Selection
6.2. Analytical Results
6.3. Interpretation
7. Discussion
8. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Appendix A




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| Samples | Cu/Zn | Ce/La | Ceanom |
|---|---|---|---|
| B1 | 0.49 | 1.58 | −0.10 |
| B2 | 0.35 | 1.93 | −0.04 |
| B3 | 0.22 | 1.94 | −0.03 |
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Xiao, S.-Y.-Z.; Chen, L.-R.-X.; Zhang, S.-T.; Zhang, D.; Chen, X.-C.; Hu, Y.-K.; Song, Q.-Y.; Yang, X.-Q.; Zuo, R.-H.; Zhang, G.-X. First Occurrence of Wronascolex sp. (Palaeoscolecida, Priapulida) in the Cambrian Tianpeng Formation (Wuliuan Stage), Southeastern Yunnan, South China: Implications for a New Burgess Shale-Type Lagerstätte. Life 2026, 16, 640. https://doi.org/10.3390/life16040640
Xiao S-Y-Z, Chen L-R-X, Zhang S-T, Zhang D, Chen X-C, Hu Y-K, Song Q-Y, Yang X-Q, Zuo R-H, Zhang G-X. First Occurrence of Wronascolex sp. (Palaeoscolecida, Priapulida) in the Cambrian Tianpeng Formation (Wuliuan Stage), Southeastern Yunnan, South China: Implications for a New Burgess Shale-Type Lagerstätte. Life. 2026; 16(4):640. https://doi.org/10.3390/life16040640
Chicago/Turabian StyleXiao, Shang-Yun-Zhi, Liu-Run-Xuan Chen, Shi-Tao Zhang, Dai Zhang, Xian-Chao Chen, Yu-Kai Hu, Qiu-Yun Song, Xiao-Qi Yang, Ruo-Han Zuo, and Guang-Xu Zhang. 2026. "First Occurrence of Wronascolex sp. (Palaeoscolecida, Priapulida) in the Cambrian Tianpeng Formation (Wuliuan Stage), Southeastern Yunnan, South China: Implications for a New Burgess Shale-Type Lagerstätte" Life 16, no. 4: 640. https://doi.org/10.3390/life16040640
APA StyleXiao, S.-Y.-Z., Chen, L.-R.-X., Zhang, S.-T., Zhang, D., Chen, X.-C., Hu, Y.-K., Song, Q.-Y., Yang, X.-Q., Zuo, R.-H., & Zhang, G.-X. (2026). First Occurrence of Wronascolex sp. (Palaeoscolecida, Priapulida) in the Cambrian Tianpeng Formation (Wuliuan Stage), Southeastern Yunnan, South China: Implications for a New Burgess Shale-Type Lagerstätte. Life, 16(4), 640. https://doi.org/10.3390/life16040640

