New age constraints for the Middle Triassic archosaur Lotosaurus: Implications for basal archosaurian appearance and radiation in South China

doi:10.1016/j.palaeo.2019.02.008

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	New age constraints for the Middle Triassic archosaur Lotosaurus: Implications for basal archosaurian appearance and radiation in South China
	Wang, Jun 1,2; Pei, Rui 1,3; Chen, Jianye 3; Zhou, Zhenzhu 2; Feng, Chongqin 1,4; Chang, Su-Chin 1
刊名	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
	2019-05-01
卷号	521 页码:30-41
关键词	Badong Formation Ladinian Detrital zircons Archosauria Hunan
ISSN号	0031-0182
DOI	10.1016/j.palaeo.2019.02.008
通讯作者	Pei, Rui(peirui@ivpp.ac.cn) ; Chang, Su-Chin(suchin@hku.hk)
英文摘要	Archosaurians were the dominant terrestrial tetrapods during the Mesozoic and became one of the most successful tetrapod clades on Earth following the end-Permian mass extinction. The lower Badong Formation in northwestern Hunan Province, South China hosts fossils representing the basal archosaurian Lotosaurus. The Badong Formation has been previously interpreted as Anisian-Ladinian (247-237 Ma) in age based on biostratigraphic correlations. This study presents new detrital zircon U-Pb age constraints for sandstones hosting Lotosaurus fossils in Sangzhi County of northwestern Hunan. Our data give a weighted mean age of 238.0 +/- 1.4 Ma (Ladinian Stage) as the maximum depositional age for the fossil-bearing layer in the lower Badong Formation. This age is consistent with younger estimates from previous biostratigraphic studies. It is also more precise and stratigraphically constrained than previously published radiometric dating results for the units. This age estimate provides critical geochronologic constraint on the radiation of early archosaurians from China into other areas of Pangea beginning in the Early Triassic.
资助项目	Research Grants Council of Hong Kong[17308316] ; HKU Seed Fund for Basic Research[201611159045] ; HKU Seed Fund for Basic Research[201711159025]
WOS关键词	EVOLUTIONARY RADIATION ; BADONG FORMATION ; ZIRCON ; PROVENANCE ; SUBDUCTION ; DIAPSIDA ; COMPLEX ; SHANXI ; RECORD ; GROWTH
WOS研究方向	Physical Geography ; Geology ; Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000463291900003
资助机构	Research Grants Council of Hong Kong ; HKU Seed Fund for Basic Research
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/9586]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Pei, Rui; Chang, Su-Chin
作者单位	1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China 2.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China 3.Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 4.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Macau, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jun,Pei, Rui,Chen, Jianye,et al. New age constraints for the Middle Triassic archosaur Lotosaurus: Implications for basal archosaurian appearance and radiation in South China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,521:30-41.
APA	Wang, Jun,Pei, Rui,Chen, Jianye,Zhou, Zhenzhu,Feng, Chongqin,&Chang, Su-Chin.(2019).New age constraints for the Middle Triassic archosaur Lotosaurus: Implications for basal archosaurian appearance and radiation in South China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,521,30-41.
MLA	Wang, Jun,et al."New age constraints for the Middle Triassic archosaur Lotosaurus: Implications for basal archosaurian appearance and radiation in South China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 521(2019):30-41.