Fossil Record of Oscillatoriaceae from Cambrian Series 2 Xiaoerblaq Formation in Northwestern Tarim Basin, China

被引：0

作者：

Li J. ^{[1
]}

Dong L. ^{[1
]}

Shi K. ^{[1
]}

机构：

[1] The Key Laboratory of Orogenic Belts and Crustal Evolution (MOE), School of Earth and Space Sciences, Peking University, Beijing

来源：

Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis | 2024年 / 60卷 / 03期

关键词：

Cambrian Series 2; Oscillatoriaceae; Tarim Basin; Xiaoerblaq Formation;

D O I：

10.13209/j.0479-8023.2024.016

中图分类号：

P57 [矿物学];

学科分类号：

070901 ;

摘要：

Thin section observations have revealed a large amount of filamentous cyanobacteria from the dolomite of Cambrian Series 2 Xiaoerblaq Formation in the northwestern Tarim Basin. Specifically, four species belonging to three genera of Oscillatoriaceae fossils have been identified, including Obruchevella meishucunensis, Oscillatoriopsis longa, Oscillatoriopsis sp., and Siphonophycus typicum. These findings represent the first report of such filamentous cyanobacteria in the Xiaoerblaq Formation, and provide an exquisite preservation of their clear three-layer structure, that is, calcified mucilaginous sheath, organic tube wall, and internal black filament, augmenting the knowledge of their internal structure and identification characteristics. The discovery of Oscillatoriaceae fossils greatly increases the diversity of the Xiaoerblaq Biota and provides new materials for further study of fossils and the evolution of life in the early Cambrian. © 2024 Peking University. All rights reserved.

引用

页码：475 / 488

页数：13

共 50 条

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