干旱区生态环境知识资源中心(Arid): Vertebrate scratch traces from the Middle Triassic Burgersdorp Formation of the main Karoo Basin, South Africa: Sedimentological and ichnological assessment

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DOI	10.1016/j.jafrearsci.2019.103594
	Vertebrate scratch traces from the Middle Triassic Burgersdorp Formation of the main Karoo Basin, South Africa: Sedimentological and ichnological assessment
	Bordy, Emese M.1; Sztano, Orsolya 2; Rampersadh, Akhil 1; Almond, John 3; Choiniere, Jonah N.4
通讯作者	Bordy, Emese M.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2019
卷号	160
英文摘要	Containing one of the richest late Early to early Middle Triassic continental biotas globally, the Burgersdorp Formation of the main Karoo Basin in South Africa hosts a diverse vertebrate fossil assemblage. Comparatively, trace fossils in this unit are lesser known, and thus how the Burgersdorp biotas behaved and interacted with their palaeoenvironment remain enigmatic. Here we report on two Middle Triassic continental ichnofossil localities dominated by tetrapod scratch traces from the Anisian part (subzones B and C) of the Burgersdorp Formation in the main Karoo Basin (Eastern Cape, South Africa). Analyses of the trace fossils and associated sedimentary facies aim to identify the possible trace makers, their behaviours and the local depositional conditions in this southern part of Pangea. We establish the palaeoenvironmental context for the ichnofossils combining ichnological data with the sedimentological records of the trace fossil sites and the nearby type area of the Burgersdorp Formation. To facilitate comparisons with similar trace fossils in the future, we quantify the morphometric parameters of these Burgersdorp trace fossils in digital models. Our results show that bilobated, branching and cross-cutting furrow casts with abundant scratch traces: (a) were generated within crevasse splay deposits adjacent to laterally migrating river channels in a semi-arid setting, and (b) can be interpreted as the claw-scratched ventral walls of a therapsid burrow system with a 3D network architecture. This well-developed vertebrate burrow network complex from the Middle Triassic of South Africa is among a handful of similarly complex vertebrate trace fossils in the global pre-Jurassic ichnological record. Collectively, these trace fossils indicate that the Triassic, and in particular the Middle Triassic, was an important period in the evolutionary history of the complex vertebrate burrowing.
英文关键词	3D vertebrate burrow network with scratch traces in photogrammetric models Tetrapods Palaeoenvironment Anisian Gondwana/Pangaea Continental
类型	Article
语种	英语
国家	South Africa ; Hungary
收录类别	SCI-E
WOS记录号	WOS:000496039000036
WOS关键词	LARGE TETRAPOD BURROWS ; BEAUFORT-GROUP ; WILLWOOD FORMATION ; EARLIEST EVIDENCE ; LOWER EOCENE ; BIOSTRATIGRAPHY ; THERAPSIDA ; PALEOSOLS ; CYNODONT ; UTAH
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311354
作者单位	1.Univ Cape Town, Dept Geol Sci, Private Bag X3, ZA-7701 Cape Town, South Africa; 2.Eotvos Lorand Univ, Dept Phys & Appl Geol, Pazmany Peter Setany 1-C, H-1117 Budapest, Hungary; 3.Nat Viva Cc, POB 12410 Mill St, ZA-8010 Cape Town, South Africa; 4.Univ Witwatersrand, Evolutionary Studies Inst, Private Bag 3, ZA-2050 Johannesburg, Gauteng, South Africa
推荐引用方式 GB/T 7714	Bordy, Emese M.,Sztano, Orsolya,Rampersadh, Akhil,et al. Vertebrate scratch traces from the Middle Triassic Burgersdorp Formation of the main Karoo Basin, South Africa: Sedimentological and ichnological assessment[J],2019,160.
APA	Bordy, Emese M.,Sztano, Orsolya,Rampersadh, Akhil,Almond, John,&Choiniere, Jonah N..(2019).Vertebrate scratch traces from the Middle Triassic Burgersdorp Formation of the main Karoo Basin, South Africa: Sedimentological and ichnological assessment.JOURNAL OF AFRICAN EARTH SCIENCES,160.
MLA	Bordy, Emese M.,et al."Vertebrate scratch traces from the Middle Triassic Burgersdorp Formation of the main Karoo Basin, South Africa: Sedimentological and ichnological assessment".JOURNAL OF AFRICAN EARTH SCIENCES 160(2019).