Occurrence of Sciadopitys-like fossil wood (Coniferales) in the Jurassic of western Liaoning and its evolutionary implications

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	Occurrence of Sciadopitys-like fossil wood (Coniferales) in the Jurassic of western Liaoning and its evolutionary implications
其他题名	Occurrence of Sciadopitys-like fossil wood (Coniferales) in the Jurassic of western Liaoning and its evolutionary implications
	Jiang ZiKun 1; Wang YongDong 1; Zheng ShaoLin 2; Zhang Wu 2; Tian Ning 2
	2012
发表期刊	CHINESE SCIENCE BULLETIN
ISSN	1001-6538
卷号	57 期号:6 页码:569-572
摘要	The genus Sciadopitys, containing a single species (S. verticillata), is the only extant representative of the Family Sciadopityaceae (Coniferales), and is a remarkable living fossil. Although some leafy fossils have been ascribed to Sciadopityaceae, fossil xylem material with a close affinity to this family is very rare, and there have been no fossils found showing both pith and primary xylem structures, which are of great importance for wood identification. Thus, it has been difficult to use fossils for the understanding of wood anatomy evolution in the sciadopityaceous plants over geological time. In this note we briefly report on Sciadopitys-like fossil wood found in the Middle Jurassic of western Liaoning, which bears well-preserved Protosciadopityoxylon-type secondary xylem, endarch primary xylem and heterogeneous pith. This is the first report of fossil specimens of the Sciadopityaceae with such detailed preservation of wood structures. The discovery provides precise anatomical evidence for reconstructing the evolutionary history and geographical distribution of Sciadopityaceae, as well as contributing to understanding of the fossil diversity of the Jurassic Yanliao Flora in northern China.
其他摘要	The genus Sciadopitys, containing a single species (S. verticillata), is the only extant representative of the Family Sciadopityaceae (Coniferales), and is a remarkable living fossil. Although some leafy fossils have been ascribed to Sciadopityaceae, fossil xylem material with a close affinity to this family is very rare, and there have been no fossils found showing both pith and primary xylem structures, which are of great importance for wood identification. Thus, it has been difficult to use fossils for the understanding of wood anatomy evolution in the sciadopityaceous plants over geological time. In this note we briefly report on Sciadopitys-like fossil wood found in the Middle Jurassic of western Liaoning, which bears well-preserved Protosciadopityoxylon-type secondary xylem, endarch primary xylem and heterogeneous pith. This is the first report of fossil specimens of the Sciadopityaceae with such detailed preservation of wood structures. The discovery provides precise anatomical evidence for reconstructing the evolu- tionary history and geographical distribution of Sciadopityaceae, as well as contributing to understanding of the fossil diversity of the Jurassic Yanliao Flora in northern China.
关键词	MAGDEFRAU LEAVES RUDOLF NOV conifer Sciadopityaceae anatomical structure Tiaojishan Formation Middle Jurassic western Liaoning
收录类别	CSCD
语种	英语
资助项目	[Chinese Academy of Sciences] ; [National Basic Research Program of China] ; [National Natural Science Foundation of China] ; [UNESCO-IUGS]
CSCD记录号	CSCD:4536316
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/148563
专题	中国科学院金属研究所
作者单位	1.中国科学院 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Jiang ZiKun,Wang YongDong,Zheng ShaoLin,et al. Occurrence of Sciadopitys-like fossil wood (Coniferales) in the Jurassic of western Liaoning and its evolutionary implications[J]. CHINESE SCIENCE BULLETIN,2012,57(6):569-572.
APA	Jiang ZiKun,Wang YongDong,Zheng ShaoLin,Zhang Wu,&Tian Ning.(2012).Occurrence of Sciadopitys-like fossil wood (Coniferales) in the Jurassic of western Liaoning and its evolutionary implications.CHINESE SCIENCE BULLETIN,57(6),569-572.
MLA	Jiang ZiKun,et al."Occurrence of Sciadopitys-like fossil wood (Coniferales) in the Jurassic of western Liaoning and its evolutionary implications".CHINESE SCIENCE BULLETIN 57.6(2012):569-572.