A new armored archosauriform (Diapsida: Archosauromorpha) from the marine Middle Triassic of China, with implications for the diverse life styles of archosauriforms prior to the diversification of Archosauria

doi:10.1007/s00114-016-1418-4

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	A new armored archosauriform (Diapsida: Archosauromorpha) from the marine Middle Triassic of China, with implications for the diverse life styles of archosauriforms prior to the diversification of Archosauria
	Li, Chun 1; Wu, Xiao-chun 2; Zhao, Li-jun 3; Nesbitt, Sterling J.4; Stocker, Michelle R.4; Wang, Li-Ting 5
刊名	SCIENCE OF NATURE
	2016-12-01
卷号	103 期号:11-12
关键词	Reptile Morphology Phylogeny Adaptation Semi-aquatic
DOI	10.1007/s00114-016-1418-4
文献子类	Article
英文摘要	Reptiles have a long history of transitioning from terrestrial to semi-aquatic or aquatic environments that stretches back at least 250 million years. Within Archosauria, both living crocodylians and birds have semi-aquatic members. Closer to the root of Archosauria and within the closest relatives of the clade, there is a growing body of evidence that early members of those clades had a semi-aquatic lifestyle. However, the morphological adaptations to a semi-aquatic environment remain equivocal in most cases. Here, we introduce a new Middle Triassic (245-235 Ma) archosauriform, Litorosuchus somnii, gen. et sp. nov., based on a nearly complete skeleton from the Zhuganpo Member (Ladinian [241-235 Ma]) of the Falang Formation, Yunnan, China. Our phylogenetic analyses suggest that Litorosuchus is a stem archosaur closely related to the aberrant Vancleavea just outside of Archosauria. The well-preserved skeleton of L. somnii bears a number of morphological characters consistent with other aquatic-adapted tetrapods including: a dorsally directed external naris, tall neural spines and elongate chevrons in an elongated tail, a short and broad scapula, webbed feet, long cervical vertebrae with long slender ribs, and an elongated rostrum with long and pointed teeth. Together these features represent one of the best-supported cases of a semi-aquatic mode of life for a stem archosaur. Together with Vancleavea campi, the discovery of L. somnii demonstrates a growing body of evidence that there was much more diversity in mode of life outside Archosauria. Furthermore, L. somnii helps interpret other possible character states consistent with a semi-aquatic mode of life for archosauriforms, including archosaurs.
WOS关键词	PHYLOGENETIC-RELATIONSHIPS ; SOUTHWESTERN CHINA ; GUIZHOU PROVINCE ; REPTILIA ; ANATOMY ; REDESCRIPTION ; BRAINCASE ; OSTEOLOGY ; SPECIMEN ; CLADE
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000389806200008
资助机构	National Natural Science Foundation of China(NNSFC-41172027 ; State Key Laboratory of Palaeobiology and Stratigraphy of Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences(153105) ; Canadian Museum of Nature(RCP09) ; IVPP ; ZMNH ; Department of Geosciences at Virginia Tech ; 41472020)
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7409]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Lab Evolutionary Systemat Vertebrates, POB 643, Beijing 100044, Peoples R China 2.Canadian Museum Nat, POB 3443,Stn D, Ottawa, ON K1P 6P4, Canada 3.Zhejiang Museum Nat Hist, 6 Westlake Culture Sq, Hangzhou 310014, Zhejiang, Peoples R China 4.Virginia Polytech Inst & State Univ, Dept Geosci, 1405 Perry St,4044 Derring Hall 0420, Blacksburg, VA 24061 USA 5.Geol Survey Guizhou Prov, Guiyang 550005, Peoples R China
推荐引用方式 GB/T 7714	Li, Chun,Wu, Xiao-chun,Zhao, Li-jun,et al. A new armored archosauriform (Diapsida: Archosauromorpha) from the marine Middle Triassic of China, with implications for the diverse life styles of archosauriforms prior to the diversification of Archosauria[J]. SCIENCE OF NATURE,2016,103(11-12).
APA	Li, Chun,Wu, Xiao-chun,Zhao, Li-jun,Nesbitt, Sterling J.,Stocker, Michelle R.,&Wang, Li-Ting.(2016).A new armored archosauriform (Diapsida: Archosauromorpha) from the marine Middle Triassic of China, with implications for the diverse life styles of archosauriforms prior to the diversification of Archosauria.SCIENCE OF NATURE,103(11-12).
MLA	Li, Chun,et al."A new armored archosauriform (Diapsida: Archosauromorpha) from the marine Middle Triassic of China, with implications for the diverse life styles of archosauriforms prior to the diversification of Archosauria".SCIENCE OF NATURE 103.11-12(2016).