A new long-necked archosauromorph from the Guanling Formation (Anisian, Middle Triassic) of southwestern China and its implications for neck evolution in tanystropheids

doi:10.1002/ar.25216

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	A new long-necked archosauromorph from the Guanling Formation (Anisian, Middle Triassic) of southwestern China and its implications for neck evolution in tanystropheids
	Wang, Wei 1,2; Spiekman, Stephan N. F.3,4; Zhao, Lijun 5; Rieppel, Olivier 6; Scheyer, Torsten M.4; Fraser, Nicholas C.7; Li, Chun1
	2023-04-07
发表期刊	ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
ISSN	1932-8486
期号	0 页码:15
摘要	A long neck is an evolutionary innovation convergently appearing in multiple tetrapod lineages, including groups of plesiosaurs, non-archosauriform archosauromorphs, turtles, sauropodomorphs, birds, and mammals. Among all tetrapods both extant and extinct, two Triassic archosauromorphs, Tanystropheus and Dinocephalosaurus, have necks that are particularly elongated relative to the lengths of their trunks. However, the evolutionary history of such hyper-elongated necks in these two archosauromorph clades remains unknown, partially because known close relatives such as Macrocnemus and Pectodens possess only moderately elongated necks. Here, we describe a newly discovered early diverging archosauromorph, Gracilicollum latens gen. et sp. nov., based on a specimen comprising a partial neck and an incompletely preserved skull. The long neck is composed of at least 18 cervical vertebrae. The dentition suggests that this new taxon most likely represents an aquatic piscivore, similar to Dinocephalosaurus and Tanystropheus hydroides. Despite possessing a high number of cervical vertebrae, Gracilicollum gen. nov. is recovered as a tanystropheid in an evolutionary grade between Macrocnemus and Tanystropheus rather than as a close relative of Dinocephalosaurus, a result that is primarily attributable to the presence of palatal teeth and the anatomy of the cervical vertebrae in Gracilicollum gen. nov. Considering the information provided by the new specimen, we provide a detailed discussion of the cervical evolution in dinocephalosaurids and tanystropheids, which is shown to be highly complex and mosaic in nature.
关键词	Archosauromorpha Dinocephalosauridae fossil marine reptile neck evolution South China Tanystropheidae Triassic vertebral column
DOI	10.1002/ar.25216
关键词[WOS]	REPTILE ; PROTOROSAUR ; GUIZHOU ; AGE
收录类别	SCI
语种	英语
资助项目	Youth Innovation Promotion Association of Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China[205321_162775] ; Swiss National Science Foundation[XDB26000000] ; [42002019]
WOS研究方向	Anatomy & Morphology
WOS类目	Anatomy & Morphology
WOS记录号	WOS:000985666300001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22523
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Li, Chun
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, CAS Ctr Excellence Life & Paleoenvironm, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Staatl Museum Naturkunde Stuttgart, Rosenstein 1, D-70191 Stuttgart, Germany 4.Univ Zurich, Dept Palaeontol, Karl Schmid Str 4, CH-8006 Zurich, Switzerland 5.Zhejiang Museum Nat Hist, Hangzhou 310014, Peoples R China 6.Field Museum, Dept Geol, 1400 S Lake Shore Dr, Chicago, IL 60605 USA 7.Natl Museums Scotland, Chambers St, Edinburgh EH1 1JF, Scotland
推荐引用方式 GB/T 7714	Wang, Wei,Spiekman, Stephan N. F.,Zhao, Lijun,et al. A new long-necked archosauromorph from the Guanling Formation (Anisian, Middle Triassic) of southwestern China and its implications for neck evolution in tanystropheids[J]. ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,2023(0):15.
APA	Wang, Wei.,Spiekman, Stephan N. F..,Zhao, Lijun.,Rieppel, Olivier.,Scheyer, Torsten M..,...&Li, Chun.(2023).A new long-necked archosauromorph from the Guanling Formation (Anisian, Middle Triassic) of southwestern China and its implications for neck evolution in tanystropheids.ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY(0),15.
MLA	Wang, Wei,et al."A new long-necked archosauromorph from the Guanling Formation (Anisian, Middle Triassic) of southwestern China and its implications for neck evolution in tanystropheids".ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY .0(2023):15.

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