New observations of the early land plant Eocooksonia Doweld from the Pridoli (Upper Silurian) of Xinjiang, China

doi:10.1016/j.jseaes.2015.02.003

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	New observations of the early land plant Eocooksonia Doweld from the Pridoli (Upper Silurian) of Xinjiang, China
	Xue, Jinzhuang 3; Wang, Qi 4; Wang, Deming ; Wang, Yi 1; Hao, Shougang
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2015
卷号	101 页码:30-38
关键词	Pridoli Eocooksonia Rhyniopsid Rhyniophytoid Kazakhstan Phytogeography
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2015.02.003
文献子类	Article
英文摘要	As an early land plant previously reported from the Upper Silurian (Pridoli) of Xinjiang, Northwest China and Central Kazakhstan, the circumscription of Eocooksonia sphaerica (Senkevitsch) Doweld remains ill-defined because of the paucity of specimens and poor preservation in marine deposits. New specimens of this plant are described from the Pridoli-aged Wutubulake Formation of the Junggar Basin, Xinjiang. New observations and comparisons with the type material from Kazakhstan confirm the pseudomonopodial branching pattern, which forms an apparent main axis with lateral dichotomously branching systems. Our specimens demonstrate that the terminal sporangia of Eocooksonia Doweld consist of a central body and a border with four to eight elongate-triangular emergences, a character shown in the published illustrations of the type material but not mentioned in the original diagnosis. Eocooksonia may be close to Cooksonia Lang and Pertonella Fanning, Edwards et Richardson in affinities, particularly to the latter that has terminal discoidal sporangia with spiny emergences. It is deduced that the sporangial central body of Eocooksonia contains sporogenous tissues, which are covered by a distal surface wall with radiated emergences. One sporangium specimen of an unnamed plant is also described from the Wutubulake Formation of Xinjiang; it shows a central body with a wide border lacking emergences, and represents a taxon superficially similar to Eocooksonia. (C) 2015 Elsevier Ltd. All rights reserved.
学科主题	Geosciences, Multidisciplinary
电子版国际标准刊号	1878-5786
出版地	OXFORD
WOS关键词	XITUN FORMATION ; COOKSONIA ; YUNNAN ; ASSEMBLAGES ; STRATA ; FLORA
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000352042700004
资助机构	National Natural Science Foundation of China [41272018] ; State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences [123106] ; Key Laboratory of Economic Stratigraphy and Palaeogeography, Chinese Academy of Sciences (Nanjing Institute of Geology and Palaeontology) [2015KF0]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25757]
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Xue, Jinzhuang,Wang, Qi,Wang, Deming,et al. New observations of the early land plant Eocooksonia Doweld from the Pridoli (Upper Silurian) of Xinjiang, China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,101:30-38.
APA	Xue, Jinzhuang,Wang, Qi,Wang, Deming,Wang, Yi,&Hao, Shougang.(2015).New observations of the early land plant Eocooksonia Doweld from the Pridoli (Upper Silurian) of Xinjiang, China.JOURNAL OF ASIAN EARTH SCIENCES,101,30-38.
MLA	Xue, Jinzhuang,et al."New observations of the early land plant Eocooksonia Doweld from the Pridoli (Upper Silurian) of Xinjiang, China".JOURNAL OF ASIAN EARTH SCIENCES 101(2015):30-38.