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

CORC > 北京大学 > 地球与空间科学学院

	New observations of the early land plant Eocooksonia Doweld from the Pridoli (Upper Silurian) of Xinjiang, China
	Xue, Jinzhuang ; Wang, Qi ; Wang, Deming ; Wang, Yi ; Hao, Shougang
刊名	journal of asian earth sciences
	2015
关键词	Pridoli Eocooksonia Rhyniopsid Rhyniophytoid Kazakhstan Phytogeography XITUN FORMATION COOKSONIA YUNNAN ASSEMBLAGES STRATA FLORA
DOI	10.1016/j.jseaes.2015.02.003
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.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000352042700004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); 1; ARTICLE; sghao@pku.edu.cn; 30-38; 101
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155313]
专题	地球与空间科学学院
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.
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.
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 (2015).