TAPHONOMY, GEOLOGICAL AGE, AND PALEOBIOGEOGRAPHY OF LOTOSAURUS ADENTUS (ARCHOSAURIA: POPOSAUROIDEA) FROM THE MIDDLE-UPPER TRIASSIC BADONG FORMATION, HUNAN, CHINA

doi:10.2110/palo.2017.084

	TAPHONOMY, GEOLOGICAL AGE, AND PALEOBIOGEOGRAPHY OF LOTOSAURUS ADENTUS (ARCHOSAURIA: POPOSAUROIDEA) FROM THE MIDDLE-UPPER TRIASSIC BADONG FORMATION, HUNAN, CHINA
	Hagen, Cedric J.1,2; Roberts, Eric M.2; Sullivan, Corwin 3,4; Liu, Jun5,6 ; Wang, Yanyin 3; Agyemang, Prince C. Owusu 2; Xu, Xing5
刊名	PALAIOS
	2018-03-01
卷号	33 期号:3 页码:106-124
ISSN号	0883-1351
DOI	10.2110/palo.2017.084
文献子类	Article
英文摘要	Lotosaurus adentus is an unusual sail-backed, edentulous poposauroid pseudosuchian primarily known from a single, nearly monospecific bonebed discovered and excavated in the 1970s in the Middle-Upper Triassic Badong Formation of Sangzhi County, Hunan Province, South China. Renewed interest in this unique taxon prompted exposure of an additional 90 m(2) of the bonebed. Almost 1000 new L. adentus bones, 28% of which were articulated, were discovered during this excavation. The bones lack evidence of tooth marks, trample marks, or insect modification, and display minimal weathering. The site is reinterpreted as a pedogenically modified floodplain pond (and overlying fluvial channel) within a warm, semi-arid sub-tropical region (paleolatitude similar to 34 degrees N), contrasting with previous interpretations of the locality as a tidal flat deposit. The occurrence of mudcracks, conchostrachan fossils, and vertic paleosol development with calcium carbonate accumulations in both overlying and underlying facies indicates periodic aridity and ephemeral conditions. The bonebed is characterized by partial disarticulation and minor transport, and is confined to a thin, < 30 cm-thick interval. Considered together, these features are most consistent with a mass mortality event, possibly drought related considering the sedimentological context, followed by minor transport during a rapid burial event.
WOS关键词	DETRITAL ZIRCON GEOCHRONOLOGY ; SONGPAN-GANZI COMPLEX ; SOUTH CHINA ; QINLING OROGEN ; SEDIMENTARY RECORD ; YANGTZE BLOCK ; HF ISOTOPES ; GOLD FIELD ; EVOLUTION ; CONSTRAINTS
WOS研究方向	Geology ; Paleontology
语种	英语
出版者	SEPM-SOC SEDIMENTARY GEOLOGY
WOS记录号	WOS:000428693100003
资助机构	National Natural Science Foundation of China(41472017 ; James Cook University ; Macalester College ; 41688103)
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/8759]
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Roberts, Eric M.
作者单位	1.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97333 USA 2.James Cook Univ, Coll Sci & Engn, Geosci, Townsville, Qld 4811, Australia 3.Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada 4.Philip J Currie Dinosaur Museum, Wembley, AB T0H 3S0, Canada 5.Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hagen, Cedric J.,Roberts, Eric M.,Sullivan, Corwin,et al. TAPHONOMY, GEOLOGICAL AGE, AND PALEOBIOGEOGRAPHY OF LOTOSAURUS ADENTUS (ARCHOSAURIA: POPOSAUROIDEA) FROM THE MIDDLE-UPPER TRIASSIC BADONG FORMATION, HUNAN, CHINA[J]. PALAIOS,2018,33(3):106-124.
APA	Hagen, Cedric J..,Roberts, Eric M..,Sullivan, Corwin.,Liu, Jun.,Wang, Yanyin.,...&Xu, Xing.(2018).TAPHONOMY, GEOLOGICAL AGE, AND PALEOBIOGEOGRAPHY OF LOTOSAURUS ADENTUS (ARCHOSAURIA: POPOSAUROIDEA) FROM THE MIDDLE-UPPER TRIASSIC BADONG FORMATION, HUNAN, CHINA.PALAIOS,33(3),106-124.
MLA	Hagen, Cedric J.,et al."TAPHONOMY, GEOLOGICAL AGE, AND PALEOBIOGEOGRAPHY OF LOTOSAURUS ADENTUS (ARCHOSAURIA: POPOSAUROIDEA) FROM THE MIDDLE-UPPER TRIASSIC BADONG FORMATION, HUNAN, CHINA".PALAIOS 33.3(2018):106-124.