CYCAD WOOD FROM THE LOPINGIAN (LATE PERMIAN) OF SOUTHERN CHINA: SHUICHENGOXYLON TIANII GEN. ET SP. NOV.

doi:10.1086/659454

	CYCAD WOOD FROM THE LOPINGIAN (LATE PERMIAN) OF SOUTHERN CHINA: SHUICHENGOXYLON TIANII GEN. ET SP. NOV.
	Wang, Shi-Jun 1,2; He, Xiao-Yuan 3; Shao, Long-Yi 4
	2011-06-01
发表期刊	INTERNATIONAL JOURNAL OF PLANT SCIENCES
ISSN	1058-5893
卷号	172 期号:5 页码:725-734
摘要	Anatomically preserved wood collected from coal seam no. 1 of the Naluozhai coal mine in the Lopingian (Late Permian) Wangjiazhai Formation in western Guizhou Province, China, is documented and interpreted. The wood belonged to a trunk with an inferred diameter of 25 cm or more and consists of axial tracheids and horizontal rays. Tracheids vary greatly in size, and small ones are usually irregularly arranged. Tracheid walls are 5-10 mu m thick and usually bilayered. There are usually biseriate araucarioides-type bordered pits on the radial tracheid walls. Two to five oval bordered pits are in each cross-field. Ray cells are thin walled, although thick-walled cells exist in some rays. Rays are quite variable in width and height. Uni- and partly biseriate rays are usually 2-20 cells high, while bi- and partly tri- to tetraseriate ones are 5-79 cells high. The cell size of rays is also quite variable and is usually larger than that of tracheids in the tangential direction. There are numerous leaf traces in the wood, and each of them extends horizontally through the wood within a broader ray. The last character is unique in known Paleozoic woods and leads to the establishment of Shuichengoxylon tianii gen. et sp. nov. The affinity of the wood with cycads, its implication in the evolution of cycad xylotomy, and its growth environment are discussed.
关键词	coal ball fossil wood new genus cycads
DOI	10.1086/659454
语种	英语
关键词[WOS]	GUIZHOU PROVINCE ; FOSSIL PLANTS ; GIGANTOPTERIDALES ; ANTARCTICYCAS ; AFFINITY ; TRUNK ; STEMS ; SPERMOPTERIS ; ARGENTINA ; ANATOMY
资助项目	CAS[KZCX2-EW-120] ; National Natural Science Foundation of China[41030213] ; National Natural Science Foundation of China[30670140] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS[073103]
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000292703800010
项目资助者	CAS ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS
出版者	UNIV CHICAGO PRESS
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/471
专题	中国科学院南京地质古生物研究所
通讯作者	Wang, Shi-Jun
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, Peoples R China 3.Yunnan Univ, Kunming 650031, Peoples R China 4.China Univ Min & Technol Beijing, Sch Geosci & Surveying Engn, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China
第一作者单位	中国科学院南京地质古生物研究所
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Wang, Shi-Jun,He, Xiao-Yuan,Shao, Long-Yi. CYCAD WOOD FROM THE LOPINGIAN (LATE PERMIAN) OF SOUTHERN CHINA: SHUICHENGOXYLON TIANII GEN. ET SP. NOV.[J]. INTERNATIONAL JOURNAL OF PLANT SCIENCES,2011,172(5):725-734.
APA	Wang, Shi-Jun,He, Xiao-Yuan,&Shao, Long-Yi.(2011).CYCAD WOOD FROM THE LOPINGIAN (LATE PERMIAN) OF SOUTHERN CHINA: SHUICHENGOXYLON TIANII GEN. ET SP. NOV..INTERNATIONAL JOURNAL OF PLANT SCIENCES,172(5),725-734.
MLA	Wang, Shi-Jun,et al."CYCAD WOOD FROM THE LOPINGIAN (LATE PERMIAN) OF SOUTHERN CHINA: SHUICHENGOXYLON TIANII GEN. ET SP. NOV.".INTERNATIONAL JOURNAL OF PLANT SCIENCES 172.5(2011):725-734.