Rhabdoxylon taiyuanense n. sp.: A new botryopterid fern from the Lower Permian of Shanxi Province, North China

doi:10.1111/mec.14061

	Rhabdoxylon taiyuanense n. sp.: A new botryopterid fern from the Lower Permian of Shanxi Province, North China
	Ma, Jing ; Wang, Shi-Jun ; Sun, Ke-Qin
	2017
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	26 期号:3 页码:489-499
摘要	This paper described a new early leptosporangiate fern occurring in the Lower Permian coal balls from Shanxi Province, North China. The fossil materials include stems, attached and detached petioles and roots, belonging to a same kind of plant. Stems are relatively small in diameter and branch dichotomously. They possess a haplostele with metaxylem tracheids decreasing outward in diameter and showing uniseriate scalariform thickenings. There are no distinguished protoxylem groups in the xylem cylinder. Cortex is parenchymatous and can be divided into three zones according to cell size. Petiolar traces bear different shapes in cross section and show a spiral diverging sequence. Petioles are circular in cross section and cortical cells are much smaller than those of stems. Petiolar traces and petioles possess a single protoxylem group at the adaxial side of the xylem strand. Root traces originate from the cauline stele and go through the cortex in a way perpendicular or oblique to the cauline stele. These characters show great similarities to the genus Rhabdoxylon but are not consistent with its any known species, so it is necessary to create a new species Rhabdoxylon taiyuanense n. sp. for the present plant. The new species probably possesses an upright habit. This is the first report of the existence of the genus Rhabdoxylon in the Cathaysian Flora. The discovery of a new type of the Palaeozoic leptosporangiate fern in China has led to reevaluation of the systematic relationships among species of the Botryopteridaceae. (C) 2016 Published by Elsevier B.V. on behalf of Nanjing Institute of Geology and Palaeontology, CAS.
关键词	Permian Taiyuan Formation Coal ball Botryopterid fern Anatomy Rhabdoxylon taiyuanense n. sp.
学科领域	Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
DOI	10.1111/mec.14061
收录类别	SCI
语种	英语
WOS关键词	PLANT ASSEMBLAGE ; KAPLANOPTERIDACEAE ; DIVERSITY ; ILLINOIS
WOS记录号	WOS:000400335200012
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1875-5887
资助机构	State Key Laboratory of Palaeobiology and Stratigraphy [Y526010202] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41530101, 41172014, 41162001]
作者邮箱	wangsj@ibcas.ac.cn
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22178
专题	系统与进化植物学国家重点实验室
作者单位	1.[Ma, Jing 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jing,Wang, Shi-Jun,Sun, Ke-Qin. Rhabdoxylon taiyuanense n. sp.: A new botryopterid fern from the Lower Permian of Shanxi Province, North China[J]. PALAEOWORLD,2017,26(3):489-499.
APA	Ma, Jing,Wang, Shi-Jun,&Sun, Ke-Qin.(2017).Rhabdoxylon taiyuanense n. sp.: A new botryopterid fern from the Lower Permian of Shanxi Province, North China.PALAEOWORLD,26(3),489-499.
MLA	Ma, Jing,et al."Rhabdoxylon taiyuanense n. sp.: A new botryopterid fern from the Lower Permian of Shanxi Province, North China".PALAEOWORLD 26.3(2017):489-499.

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