The late Eocene hyracodontid perissodactyl Ardynia from Saint Jacques, Inner Mongolia, China and its implications for the potential Eocene-Oligocene boundary

doi:10.1016/j.palwor.2017.09.001

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	The late Eocene hyracodontid perissodactyl Ardynia from Saint Jacques, Inner Mongolia, China and its implications for the potential Eocene-Oligocene boundary
	Bai, Bin1,2 ; Wang, Yuan-Qing1,3 ; Zhang, Zhao-Qun1,3
刊名	PALAEOWORLD
	2018-06-01
卷号	27 期号:2 页码:247-257
关键词	Saint Jacques Inner Mongolia Hyracodontid Ardynia Ergilian Eocene-oligocene Boundary
ISSN号	1871-174X
DOI	10.1016/j.palwor.2017.09.001
文献子类	Article
英文摘要	Saint Jacques is a classic Oligocene fossil locality in China, which was first investigated by P. Teilhard de Chardin and E. Licent in 1923. All the fossil mammals previously reported from the area are Oligocene in age. Here we report some new material of the hyracodontid Ard)nia from two lower horizons in the Saint Jacques area. These new specimens represent two species: Ardynia praeco,k Matthew and Granger. 1923 and A. ordosensis n. sp. A right lower jaw of Ardynia praecox with complete il-c shows that i2 is the largest. The new species, Ardynia ordosensis, is characterized by a moderately hypsodont Ml with a pillar-like "crista" and the metaloph connecting the ectoloph distal to the metacone, characters that are more similar to those of A. altidentata than to any other species in Ardynia. The stratum bearing Ergilian Ardynia extends the deposits at Saint Jacques down to the upper Eocene. In combination with early Oligocene microfossils from the strata overlying the upper Eocene Ardynia-bearing layers, it is reasonable to conclude that the Saint Jacques section may bracket, or likely document, the Eocene-Oligocene transition. (C) 2017 Elsevier Ireland Ltd Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. Published by Elsevier B.V. All rights reserved.
WOS关键词	ERGILIN-DZO FORMATION ; NEI-MONGOL ; MAMMALIA ; MIDDLE ; PHYLOGENY ; FAUNA
WOS研究方向	Paleontology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000432457000008
资助机构	National Natural Science Foundation of China(41672014 ; Special Fund for Fossil Excavation and Preparation, CAS, Macroevolutionary Processes and Paleoenvironments of Major Historical Biota(XDPB05) ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)(163103) ; Youth Innovation Promotion Association, CAS ; 41572021 ; 41404022 ; 41472003 ; 41002009)
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/8396]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Bai, Bin
作者单位	1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Bai, Bin,Wang, Yuan-Qing,Zhang, Zhao-Qun. The late Eocene hyracodontid perissodactyl Ardynia from Saint Jacques, Inner Mongolia, China and its implications for the potential Eocene-Oligocene boundary[J]. PALAEOWORLD,2018,27(2):247-257.
APA	Bai, Bin,Wang, Yuan-Qing,&Zhang, Zhao-Qun.(2018).The late Eocene hyracodontid perissodactyl Ardynia from Saint Jacques, Inner Mongolia, China and its implications for the potential Eocene-Oligocene boundary.PALAEOWORLD,27(2),247-257.
MLA	Bai, Bin,et al."The late Eocene hyracodontid perissodactyl Ardynia from Saint Jacques, Inner Mongolia, China and its implications for the potential Eocene-Oligocene boundary".PALAEOWORLD 27.2(2018):247-257.