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

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	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 3,4; Zhao, Fu-Guang ; Chen, Xin-Shi ; Wang, Shi-Jun
刊名	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
	2019
卷号	269 页码:94-103
关键词	Conifer Wood anatomy Paleoclimate False rings Xuanwei Formation Volcaniclastic tuff
ISSN号	0034-6667
DOI	10.1016/j.revpalbo.2019.06.012
文献子类	Article
英文摘要	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.
学科主题	Plant Sciences ; Paleontology
电子版国际标准刊号	1879-0615
出版地	AMSTERDAM
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
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000483648600007
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]
内容类型	期刊论文
源URL	[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.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.Univ Birmingham, Birmingham Inst Forest Res, Birmingham B15 2TT, W Midlands, England 3.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England 4.Yunnan Univ, Inst Deep Time Terr Ecol, Kunming 650091, Yunnan, 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.