Stratigraphy and Geochronology of Vertebrate Fossil-Bearing Jurassic;Strata from Linglongta, Jianchang County, Western Liaoning, Northeastern;China

	Stratigraphy and Geochronology of Vertebrate Fossil-Bearing Jurassic;Strata from Linglongta, Jianchang County, Western Liaoning, Northeastern;China
	Peng Nan 3; Liu Yongqing ; Kuang Hongwei ; Jiang Xiaojun ; Xu Huan
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2012
卷号	86 期号:6 页码:1326-1339
关键词	Jurassic vertebrates stratigraphy geochronology northeastern China
ISSN号	070GH
英文摘要	Northeastern China contains widely distributed Jurassic terrestrial strata that have yielded many spectacular mammal and pterosaur fossils, in addition to feathered dinosaur fossils and more recent discoveries from Jianchang, particularly from western Liaoning. However, the fossil-bearing stratigraphic succession, regional correlation, and age estimates of the fossils found in Jianchang County and nearby areas have been contentious. Here, we report on the vertebrate fossil-bearing Jurassic stratigraphy from Linglongta, Jianchang County, western Liaoning, including a SHRIMP U-Pb zircon date unambiguously associated with the fossil horizons. The primary goal was to determine the vertebrate fossil-bearing succession. A further aim was to provide age estimations for the fossil-bearing horizon as well as the earliest appearance of feathered dinosaurs, the eutherianplacental clade, and transitional pterosaurs. Field investigations showed that the vertebrate fossil-bearing stratigraphic succession in Jianchang County mainly consists of basal andesites overlain by rhythmic tuffs and tuffaceous lacustrine sediments, with the upper intermediate or acidic lavas interbedded with laminated more or less tuffaceous lacustrine deposits. This sequence correlates well with the Middle Jurassic Lanqi/Tiaojishan Formation in northeastern China. Detailed and accurate field observations showed that the well-preserved vertebrate fossils were buried in either the middle or the upper fine-grained laminated lacustrine deposits. Previous and current SHRIMP U-Pb zircon dates provide an age estimation of 161159 Myr for the fossil-bearing horizon and vertebrates. This indicates that the earliest appearance of feathered dinosaurs here was more than 159 Myr ago and unquestionably older than Archaeopteryx from Germany, making these the earliest known feathered dinosaurs in the world. Furthermore, the eutherianplacental clade and the known transitional pterosaurs first emerged no later than 161 Myr. The vertebrate assemblage unearthed recently from Linglongta and neighboring areas in Jianchang County belongs to the Daohugou Biota. In addition to feathered dinosaurs, this biota was characterized by mammals, primitive pterosaurs, insects, and plants and was present in Inner Mongolia, western Liaoning, and northern Hebei in northeastern China during the MiddleLate Jurassic.
学科主题	地层学与地史学
WOS关键词	NORTHERN HEBEI PROVINCE ; INNER-MONGOLIA ; YIXIAN FORMATION ; VOLCANIC-ROCKS ; INTEGUMENTARY STRUCTURES ; ENANTIORNITHINE BIRD ; FEATHERED DINOSAURS ; TUCHENGZI FORMATION ; SIHETUN VERTEBRATE ; DAOHUGOU ; FORMATION
WOS研究方向	Geosciences, Multidisciplinary
语种	英语
出版者	We thank Prof. Lu Junchang, You Hailu, Ji Shu'an, and Ji Qiang for;stimulating discussions, and Dr. Dong Chunyan and Dr. Wang Wei for their;help with laboratory work and processing the data for the zircon SHRIMP;U-Pb age dating. Financial support from the Natural Science Foundation;of China (90914003), Foundation of Geology Institute of CAGS (No.;J1106), and China Geology Survey (1212010610421, 1212011085477) is;gratefully acknowledged. Constructive reviews by anonymous reviewers;improved the manuscript substantially.
WOS记录号	WOS:000313494000004
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39683]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China. 3.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Peng Nan,Liu Yongqing,Kuang Hongwei,et al. Stratigraphy and Geochronology of Vertebrate Fossil-Bearing Jurassic;Strata from Linglongta, Jianchang County, Western Liaoning, Northeastern;China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2012,86(6):1326-1339.
APA	Peng Nan,Liu Yongqing,Kuang Hongwei,Jiang Xiaojun,&Xu Huan.(2012).Stratigraphy and Geochronology of Vertebrate Fossil-Bearing Jurassic;Strata from Linglongta, Jianchang County, Western Liaoning, Northeastern;China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,86(6),1326-1339.
MLA	Peng Nan,et al."Stratigraphy and Geochronology of Vertebrate Fossil-Bearing Jurassic;Strata from Linglongta, Jianchang County, Western Liaoning, Northeastern;China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 86.6(2012):1326-1339.