The stratigraphic and geographic occurrences of Permo-Triassic tetrapods in the Bogda Mountains, NW China - Implications of a new cyclostratigraphic framework and Bayesian age model

doi:10.1016/j.jafrearsci.2022.104655

IVPP-IR > 中科院古脊椎所（2000年以后）

	The stratigraphic and geographic occurrences of Permo-Triassic tetrapods in the Bogda Mountains, NW China - Implications of a new cyclostratigraphic framework and Bayesian age model
	Angielczyk, Kenneth D.1; Liu, Jun2,3,4 ; Sidor, Christian A.5; Yang, Wan 6
	2022-11-01
发表期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
卷号	195 期号:0 页码:14
摘要	The Junggar and Turpan basins of Xinjiang Uygur Autonomous Region, northwest China, host a well-preserved terrestrial Permo-Triassic boundary sequence exposed along the northern and southern flanks of the Bogda Mountains. During the Permo-Triassic transition, this region was located in mid-latitude northeast Pangaea, making it an important comparison to the well-studied higher latitude record of the South African Karoo Basin. Broad similarities are apparent between the tetrapod fossil records of both areas, such as the reported co-occurrence of Dicynodon-grade dicynodontoids and Lystrosaurus in the upper Permian and the high abundance of Lystrosaurus in the Lower Triassic. However, the exact placement of the Permo-Triassic boundary in Xinjiang and South Africa has been debated. In the Chinese sections, the Permo-Triassic boundary falls within the upper Guodikeng Formation (= upper Wutonggou low order cycle), but several horizons have been proposed based on biostratigraphy, chemostratigraphy, and paleomagnetic data. A new Bayesian age model that is calibrated by multiple radiometric dates and tied to detailed litho-and cyclostratigraphic data offers new insight into the location of the Permo-Triassic boundary in Xinjiang and the opportunity to reconsider tetrapod occurrences in a highly resolved chronostratigraphic framework. We investigated the positions of new and historic tetrapod collections relative to the revised Permo-Triassic boundary, including uncertainties about the locations of key historic specimens. The stratigraphic range of Dicynodon-grade dicynodontoids in Xinjiang is poorly constrained: most specimens, including the holotype of Jimusaria sinkianensis, cannot be precisely placed relative to the Permo-Triassic boundary. A new specimen of Turfanodon sp. for which we have reliable data occurs in the upper Permian. Despite their previous treatment as Permian in age, most Bogda chroniosuchians were collected in strata above the Permo-Triassic boundary and the therocephalian Dalongkoua fuae also may be Triassic. Some prior placements of the Permo-Triassic boundary in Xinjiang imply an upper Permian lowest occurrence for the cosmopolitan dicynodont Lystrosaurus, but all Lystrosaurus specimens that we can precisely locate fall above the Permo-Triassic boundary. The high abundance of Lystrosaurus in the well-dated Early Triassic of Xinjiang sug-gests an Early Triassic age for the interval of greatest Lystrosaurus abundance in the Karoo Basin, where the exact ages of putative Permo-Triassic strata are more controversial. The Xinjiang record is an important datum for determining whether there was a single, globally synchronous time of highest Lystrosaurus abundance.
关键词	Permian Triassic Tetrapoda Dicynodontia Lystrosaurus Permo-triassic extinction
DOI	10.1016/j.jafrearsci.2022.104655
关键词[WOS]	ZONE BEAUFORT GROUP ; KAROO BASIN ; SOUTH-AFRICA ; DIVERSITY PATTERNS ; BOUNDARY ; EXTINCTION ; THERAPSIDA ; XINJIANG ; BIOSTRATIGRAPHY ; DAPTOCEPHALUS
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000862929600002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22031
专题	中科院古脊椎所（2000年以后）
通讯作者	Angielczyk, Kenneth D.
作者单位	1.Field Museum Nat Hist, Negaunee Integrat Res Ctr, Chicago, IL 60605 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironment, Beijing 100044, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 5.Univ Washington, Dept Biol, Burke Museum, Seattle, WA 98195 USA 6.Missouri Univ Sci & Technol, Geol & Geophys Program, Rolla, MO 65409 USA
推荐引用方式 GB/T 7714	Angielczyk, Kenneth D.,Liu, Jun,Sidor, Christian A.,et al. The stratigraphic and geographic occurrences of Permo-Triassic tetrapods in the Bogda Mountains, NW China - Implications of a new cyclostratigraphic framework and Bayesian age model[J]. JOURNAL OF AFRICAN EARTH SCIENCES,2022,195(0):14.
APA	Angielczyk, Kenneth D.,Liu, Jun,Sidor, Christian A.,&Yang, Wan.(2022).The stratigraphic and geographic occurrences of Permo-Triassic tetrapods in the Bogda Mountains, NW China - Implications of a new cyclostratigraphic framework and Bayesian age model.JOURNAL OF AFRICAN EARTH SCIENCES,195(0),14.
MLA	Angielczyk, Kenneth D.,et al."The stratigraphic and geographic occurrences of Permo-Triassic tetrapods in the Bogda Mountains, NW China - Implications of a new cyclostratigraphic framework and Bayesian age model".JOURNAL OF AFRICAN EARTH SCIENCES 195.0(2022):14.

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