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
ISSN0195-6671
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
DOI10.1016/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.
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