Xuanweioxylon damogouense sp. nov., a gymnosperm stem from the Lopingian (late Permian) of southwestern China and its systematic and paleoecological implications

doi:10.1016/j.revpalbo.2019.06.012

	Xuanweioxylon damogouense sp. nov., a gymnosperm stem from the Lopingian (late Permian) of southwestern China and its systematic and paleoecological implications
	Yang, Yang ; He, Xiao-Yuan ; Hilton, Jason 1,2; Zhao, Fu-Guang ; Chen, Xin-Shi ; Wang, Shi-Jun
	2019
发表期刊	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN	0034-6667
卷号	269 页码:94-103
摘要	A new species of permineralized gymnosperm stem is described from volcaniclastic tuffs in Lopingian (late Permian) Xuanwei Formation from eastern Yunnan province, China. The stem comprises well-preserved tissues of the pith, primary and secondary xylem. Pith is divided into a thick-walled parenchymatous peripheral zone and an inner parenchymatous part. Primary xylem strands are numerous and indistinct with mesarch maturation. Secondary xylem is pycnoxylic with scalariform bordered pits on radial tracheid walls, with rays normally uniseriate or partly biseriate. Cross-field pits are mixed and including circular, elliptical and scalariform pitting. Comparisons indicate a close affinity with the contemporaneous plant Xuanweioxylon scalanforme, but differences with it lead to the erection of Xuanweioxylon damogouense sp. nov. We evaluate the systettiatic affinity of both species of Xuanweioxylon and conclude they represent conifers based on features of their wood anatomy. We consider the Xuanwei Formation includes at least four species of conifer, and show that X. damogouense possessed weak growth rings and false rings that suggest it grew in a climate with low seasonality and occasional periods of drought. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Conifer Wood anatomy Paleoclimate False rings Xuanwei Formation Volcaniclastic tuff
学科领域	Plant Sciences ; Paleontology
DOI	10.1016/j.revpalbo.2019.06.012
收录类别	SCI
语种	英语
WOS关键词	CORDAITALEAN SEED PLANTS ; NORTHERN BOGDA MOUNTAINS ; GUIZHOU PROVINCE ; NORTHWEST CHINA ; CONIFER WOODS ; WUTONGGOU FORMATION ; SHANXI PROVINCE ; JUNGGAR BASIN ; TIANII GEN. ; RECONSTRUCTION
WOS研究方向	Plant Sciences ; Paleontology
WOS记录号	WOS:000483648600007
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1879-0615
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [01702242, 41472021, 41530101] ; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB26000000]
作者邮箱	hexiaoy@ynu.edu.cn
作品OA属性	Green Submitted
引用统计	被引频次：5[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/2S10CLM1/19651
专题	系统与进化植物学国家重点实验室
作者单位	1.Yunnan Univ, Inst Deep Time Terr Ecol, Kunming 650091, Yunnan, Peoples R China 2.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England 3.Univ Birmingham, Birmingham Inst Forest Res, Birmingham B15 2TT, W Midlands, England 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yang,He, Xiao-Yuan,Hilton, Jason,et al. Xuanweioxylon damogouense sp. nov., a gymnosperm stem from the Lopingian (late Permian) of southwestern China and its systematic and paleoecological implications[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2019,269:94-103.
APA	Yang, Yang,He, Xiao-Yuan,Hilton, Jason,Zhao, Fu-Guang,Chen, Xin-Shi,&Wang, Shi-Jun.(2019).Xuanweioxylon damogouense sp. nov., a gymnosperm stem from the Lopingian (late Permian) of southwestern China and its systematic and paleoecological implications.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,269,94-103.
MLA	Yang, Yang,et al."Xuanweioxylon damogouense sp. nov., a gymnosperm stem from the Lopingian (late Permian) of southwestern China and its systematic and paleoecological implications".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 269(2019):94-103.

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