Clam shrimp genus Ordosestheria from the Lower Cretaceous Dalazi Formation in Jilin Province, north-eastern China

doi:10.1016/j.cretres.2017.06.011

	Clam shrimp genus Ordosestheria from the Lower Cretaceous Dalazi Formation in Jilin Province, north-eastern China
	Teng, X (滕晓); Li, G (李罡)
	2017
发表期刊	Cretaceous Research
ISSN	0195-6671
卷号	78 页码:196-205
摘要	Ordosestheria Wang, 1984 was originally described from the lower Aptian Jingchuan Formation (previously the sixth member of the Zhidan Group) in north-western China. It was recovered from the lower Barremian Bouhedma Formation in southern Tunisia. However, we identified species of Ordosestheria from the upper Albian Dalazi Formation in north-eastern China, which were previously identified as orthestheriids. This means that the distribution area of Ordosestheria is wider than we thought before. Through the SEM examination of specimens of Or. multicostata (Chen in Zhang et al., 1976), new features have been discerned: 1) small-sized polygonal reticulation occurs on growth bands near the umbo; 2) reticulation changes into evenly distributed puncta; 3) then widely spaced radial lirae with intercalated fine puncta; 4) puncta are disappeared on middle and lower part of the carapace, leaving an undulating upper part and a row of small pits along the lower margin of each growth band; 5) growth lines are serrated in their lower margins. As a result, Ordosestheria is also a principal component of the Yanjiestheria clam shrimp fauna, and can be an index genus for the subdivision of non-marine sequences in China. (C) 2017 Elsevier Ltd. All rights reserved.
关键词	Clam shrimp taxonomy Ordosestheria Yanjiestheria fauna Lower Cretaceous Dalazi Formation China
DOI	10.1016/j.cretres.2017.06.011
收录类别	SCI
语种	英语
WOS研究方向	Geology ; Paleontology
WOS类目	Geology ; Paleontology
WOS记录号	WOS:000408297300023
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/13310
专题	中国科学院南京地质古生物研究所其他
通讯作者	Li, G (李罡)
推荐引用方式 GB/T 7714	Teng, X ,Li, G . Clam shrimp genus Ordosestheria from the Lower Cretaceous Dalazi Formation in Jilin Province, north-eastern China[J]. Cretaceous Research,2017,78:196-205.
APA	Teng, X ,&Li, G .(2017).Clam shrimp genus Ordosestheria from the Lower Cretaceous Dalazi Formation in Jilin Province, north-eastern China.Cretaceous Research,78,196-205.
MLA	Teng, X ,et al."Clam shrimp genus Ordosestheria from the Lower Cretaceous Dalazi Formation in Jilin Province, north-eastern China".Cretaceous Research 78(2017):196-205.