The Silurian-Devonian boundary in East Yunnan (South China) and the minimum constraint for the lungfish-tetrapod split

doi:10.1007/s11430-020-9794-8

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	The Silurian-Devonian boundary in East Yunnan (South China) and the minimum constraint for the lungfish-tetrapod split
	Zhao, Wenjin 3,4,5; Zhang, Xiaolin 2; Jia, Guodong 1; Shen, Yan'an 2; Zhu, Min 3,4,5
刊名	SCIENCE CHINA-EARTH SCIENCES
	2021-07-22
期号	64 页码:14
关键词	Carbon isotope stratigraphy Silurian-Devonian boundary East Yunnan South China Lungfish-tetrapod split Calibration date
ISSN号	1674-7313
DOI	10.1007/s11430-020-9794-8
英文摘要	The Silurian-Devonian interval is an essential period in Earth history for witnessing the rise of sarcopterygian fishes and terrestrial vascular plants. In addition to its implication in global stratigraphic correlation, the precise location of the Silurian-Devonian boundary (SDB) in East Yunnan closely relates to the minimal and maximal estimated dates for the lungfish-tetrapod split. Several geochemical indicators including the values and curves of delta C-13(org), delta C-13(carb) and TOC are obtained from the continuous SDB sequence in Dahe, Yiliang County, East Yunnan. The results reveal the significant positive delta C-13(org) shifts in the upper part of the Yulungssu Formation and the lower part of the Xishancun Formation, and the peak value (-20.0 parts per thousand) in the sample YD-25 from the lowermost of the Xishancun Formation, replicating the delta C-13(org) variation trend from the uppermost Silurian to the lowermost Devonian worldwide. The delta C-13(org) variation across the SDB at the Dahe Section resembles the SDB curve from the borehole Klonk-1 drilled at the top of the Klonk GSSP in the Prague Basin, Czech Republic. As such, we place the SDB in the Dahe Area between the samples of YD-17 and YD-18 from the lowermost part of the Xishancun Formation. This SDB assignment is corroborated by new findings of Early Devonian thelodont Parathelodus from the lower part of the Xishancun Formation in Qujing Area. The resolution of the SDB in Dahe, coupled with available paleontological data and the biostratigraphic zonation in East Yunnan, has provided vital data for the geological ages of the fish-bearing strata in East Yunnan. The earliest rhipidistian Youngolepis from the Xishancun Formation (Lochkovian, Devonian) and earliest stem-sarcopterygian Psarolepis from the Kuanti Formation (Ludfordian, Silurian) in East Yunnan indicate that the split between lungfish and tetrapods occurred between 426.5 and 416.0 Ma.
资助项目	National Natural Science Foundation of China[41530102] ; Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-DQC002] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDB26000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS)[XDA19050102] ; National Natural Science Foundation of China[42072026] ; National Natural Science Foundation of China[41972006]
WOS关键词	CARBON-ISOTOPE STRATIGRAPHY ; INTEGRATIVE STRATIGRAPHY ; PALEONTOLOGICAL EVIDENCE ; DELTA-C-13 STRATIGRAPHY ; KUANTI FORMATION ; NORTH-AMERICA ; FISH ; TRANSITION ; SARCOPTERYGII ; OSTEICHTHYES
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000677930000001
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/18215]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Zhu, Min
作者单位	1.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Key CAS Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wenjin,Zhang, Xiaolin,Jia, Guodong,et al. The Silurian-Devonian boundary in East Yunnan (South China) and the minimum constraint for the lungfish-tetrapod split[J]. SCIENCE CHINA-EARTH SCIENCES,2021(64):14.
APA	Zhao, Wenjin,Zhang, Xiaolin,Jia, Guodong,Shen, Yan'an,&Zhu, Min.(2021).The Silurian-Devonian boundary in East Yunnan (South China) and the minimum constraint for the lungfish-tetrapod split.SCIENCE CHINA-EARTH SCIENCES(64),14.
MLA	Zhao, Wenjin,et al."The Silurian-Devonian boundary in East Yunnan (South China) and the minimum constraint for the lungfish-tetrapod split".SCIENCE CHINA-EARTH SCIENCES .64(2021):14.