A Comparative Study of Three Types of Dasycladalean Algae (Dasyporella, Vermiporella, Catenuporella gigantia) Fossils from the Late Ordovician Beiguoshan Formation in Ordos
Main Article Content
Keywords
Late Ordovician, calcified dasycladalean algae, morphological characteristics, palaeoecology
Abstract
To explore the morphological characteristics and palaeoecological significance of Late Ordovician calcified dasycladalean algae, this study conducts a comparative analysis of Dasyporella, Vermiporella and Catenuporella gigantia based on field section data and thin-section rock samples collected from the southwestern margin of the Ordos Basin and Zhuzhai area in Yushan, northeastern Jiangxi. The results show that obvious differences exist among the three dasycladalean algae in thallus morphology, central cavity, calcified wall and living environment. Among them, Catenuporella gigantia is mainly distributed in high-energy reef facies environments; Vermiporella has a wide adaptive range; Dasyporella is mostly found in bank facies limestone. Different dasycladalean algal assemblages can reflect variations in hydrodynamic conditions and sedimentary environments, providing a basis for sedimentary facies identification and palaeoecological reconstruction of the Late Ordovician.
References
- [1]Zhang, Y. Y., Jiang, H. X., Wu, Y. S., Bao, H. P., Ren, J. F., & Huang, Z. L. (2020). Calcified dasycladalean algae fossils from the Late Ordovician on the western and southern margins of the Ordos Basin. Acta Micropalaeontologica Sinica, 37(3), 228–237. https://doi.org/10.16087/j.cnki.1000-0674.2020.03.003
- [2]Liu, L. J., Yang, H. J., Pan, W. Q., & Wu, Y. S. (2012). Calcareous algal fossils from the Upper Ordovician Lianglitage Formation in Tarim Basin, Xinjiang, China. Acta Micropalaeontologica Sinica, 29(1), 18–38. https://doi.org/10.16087/j.cnki.1000-0674.2012.01.003
- [3]Chen, Z. L., Yu, J. H., Jin, S. Y., Bian, L. Z., & Ju, T. Y. (1995). A new species of calcareous algae from the Upper Ordovician Sanqushan Formation in Huibu, Changshan, Zhejiang. Acta Micropalaeontologica Sinica, (2), 211–214. https://doi.org/10.16087/j.cnki.1000-0674.1995.02.010
- [4]Wu, Y. S., Sun, X. F., Zhang, G. C., Qi, Y. A., Bao, H. P., Ren, J. F., & Huang, Z. L. (2020). Cyanobacterial fossils and their palaeoenvironmental significance from the Upper Ordovician Xiazhen Formation at Zhuzhai, Yushan, Jiangxi Province. Acta Micropalaeontologica Sinica, 37(1), 35–47. https://doi.org/10.16087/j.cnki.1000-0674.2020.01.003
Article Sidebar
This work is licensed under a Creative Commons Attribution 4.0 International License.