Biology:Tuanshanzia
| Tuanshanzia Temporal range: Statherian–Calymmian
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| Scientific classification | |
| Domain: | Eukaryota
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| Kingdom: | |
| Genus: | Tuanshanzia Yan, 1995
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| Type species | |
| Tuanshanzia lanceolata Yan, 1995
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| Species | |
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Tuanshanzia is a genus of Proterozoic eukaryote, known from several locations across China and India, including the Gaoyuzhuang and Chuanlinggou formations,[1] as well as the Vindhya Basin.[2] It is probably an alga, although its exact classification is currently unclear. Tuanshanzia seems to be part of a wider group of elongate Proterozoic algae, alongside Changchengia and Eopalmaria.[3]
Description
Tuanshanzia specimens range from 4 to 30 cm (1.6 to 11.8 in) long, and are often preserved as carbonaceous films with a wide range of shapes, varying by species. The type, T. lanceolata has a lanceolate shape, whereas other species have shapes ranging from oval to elongated. As a form taxon, Tuanshanzia is likely paraphyletic, although as no practical alternative exists it remains a valid genus. The genus is named after the Tuanshanzi Formation, where it was first discovered, while the various species are named after their morphology.[1][3][2]
References
- ↑ 1.0 1.1 Chen, Kai; Miao, Lanyun; Zhao, Fangchen; Zhu, Maoyan (15 July 2023). "Carbonaceous macrofossils from the early Mesoproterozoic Gaoyuzhuang Formation in the Yanshan Range, North China". Precambrian Research 392. doi:10.1016/j.precamres.2023.107074. https://www.sciencedirect.com/science/article/abs/pii/S0301926823001146.
- ↑ 2.0 2.1 Sharma, Mukund (December 2006). "Late Palaeoproterozoic (Statherian) carbonaceous films from the Olive Shale (Koldaha Shale), Semri Group, Vindhyan Supergroup, India". Journal of the Palaeontological Society of India 51 (2): 27-35. http://palaeontologicalsociety.in/vol51_2/v2.pdf.
- ↑ 3.0 3.1 Wang, Ye; Wang, Yue; Tang, Feng; Zhao, Mingsheng (8 June 2020). "Ediacaran macroalgal holdfasts and their evolution: a case study from China". Palaeontology 63 (5): 821-840. doi:10.1111/pala.12485. https://onlinelibrary.wiley.com/doi/full/10.1111/pala.12485.
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