Carboniferous biostratigraphy of rugose corals

Carboniferous biostratigraphy of rugose corals
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石炭纪皱纹珊瑚生物地层学

DOI:
10.1144/sp512-2021-79
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发表时间:
2021-10
期刊:
Geological Society, London, Special Publications
影响因子:
--
通讯作者:
Keyi Hu
Keyi Hu
中科院分区:
其他
文献类型:
--
作者:
Xiangdong Wang;Sun-Rong Yang;Le Yao;Tetsuo Sugiyama;Keyi Hu

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摘要皱纹珊瑚是浅水环境中的主要化石类群之一。它们在上个世纪建立区域生物地层系统的过程中,对石炭系地层的划分和对比起了重要作用,并可用于远距离对比。石炭纪的皱纹珊瑚记录了两个进化事件。一个是Tournaisian恢复事件,出现了大量典型的石炭纪皱纹珊瑚,如柱珊瑚分类群,以及大型、不均匀珊瑚的显著多样化。另一种是中石炭世界线的皱纹珊瑚组成的转换,表现为许多轴向结构复杂的大型不均匀分类群的消失和以复合皱纹分类群为特征的典型Pennsylvania分类群的出现。皱纹珊瑚的生物地层学尺度显示,在密西西比比在宾夕法尼亚州,这可能是由晚古生代冰期,导致冰川海平面变化和缺乏连续的宾夕法尼亚州碳酸盐岩地层的时间分辨率。宾夕法尼亚州的皱纹珊瑚在辛梅里亚大陆完全消失了。高分辨率的生物地层学的皱纹珊瑚到目前为止,只有在密西西比时间尺度的少数地区实现。在大多数地区,需要更详细的分类工作和不同化石群之间的精确关联。
Abstract Rugose corals are one of the major fossil groups in shallow-water environments. They played an important role in dividing and correlating Carboniferous strata during the last century, when regional biostratigraphic schemes were established, and may be useful for long-distance correlation. Carboniferous rugose corals document two evolutionary events. One is the Tournaisian recovery event, with abundant occurrences of typical Carboniferous rugose corals such as columellate taxa and a significant diversification of large, dissepimented corals. The other is the changeover of rugose coral composition at the mid-Carboniferous boundary, which is represented by the disappearance of many large dissepimented taxa with complex axial structures and the appearance of typical Pennsylvanian taxa characterized by compound rugose taxa. The biostratigraphic scales for rugose corals show a finer temporal resolution in the Mississippian than in the Pennsylvanian, which was probably caused by the Late Paleozoic Ice Age that resulted in glacial–eustatic changes and a lack of continuous Pennsylvanian carbonate strata. The Pennsylvanian rugose corals are totally missing in the Cimmerian Continent. High-resolution biostratigraphy of rugose corals has so far only been achieved in few regions for the Mississippian timescale. In most regions, more detailed taxonomic work and precise correlations between different fossil groups are needed.
DOI: --
发表时间: 1960
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