Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning, Northeast China

doi:10.1111/j.1759-6831.2009.00007.x

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 中国科学院东亚植物多样性与生物地理学重点实验室

	Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning, Northeast China
	Guo, Shuang-Xing 1,2; Sha, Jin-Geng 3; Bian, Li-Zeng 4; Qiu, Yin-Long 5
刊名	JOURNAL OF SYSTEMATICS AND EVOLUTION
	2009-03-01
卷号	47 期号:2 页码:93-102
关键词	Biogeography Early Cretaceous Gnetum Affinity Male Spike Strobiles Northeastern China
ISSN号	0529-1526
DOI	10.1111/j.1759-6831.2009.00007.x
通讯作者	guosx2006@yahoo.com.cn
文献子类	Article
英文摘要	A fossil with Gnetum affinity was found in the Jianshangou Member (Barremian Age) of the Yixian Formation (Lower Cretaceous Epoch) of the Jehol Group in western Liaoning, northeastern China. The single fossil specimen is represented by both elongate-cylindrical male spike strobiles which home within a nodal bract of cauliflorous branch. The spike strobiles have apparent nodes, invisible internodes, and numerous verticillate involucral collars. The microsporangiate units within involucral collars are not seen. The male spike strobiles with verticillate involucral collars occur exclusively in Gnetum; hence, the fossil strobiles are attributed to a new taxon, Khitania columnispicata gen. & sp. nov., being closely related to Gnetum. The general isotopic dating suggests an age of Barremian, ca. 125-122 million years (Myr) ago for the Jianshangou Member. The palaeoecological and palaeoclimatic inference based on the compositions of flora and fauna, and lithological characters of the fossil locality suggests that the fossil plants grew in a subtropical mesophytic forest and under a warmer climate. The remains of male spike strobiles are the first record of gnetalean macrofossil. It documents the evolution of the distinct gnetoid morphology and indicates a wider range of distribution of Gnetaceae in the Early Cretaceous than present day.
学科主题	Plant Sciences
WOS关键词	SEED PLANT PHYLOGENY ; SP-NOV ; GNETALEAN AFFINITIES ; EXTANT GYMNOSPERMS ; CONIFERS ; ANGIOSPERMS ; FOSSILS ; EPHEDRA ; ORIGIN ; GENES
WOS研究方向	Plant Sciences
语种	英语
WOS记录号	WOS:000264959200001
资助机构	Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-114]; National Natural Science Foundation of China [40632010]
公开日期	2011-12-06
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/2713]
专题	昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Dept Palaeobot & Palynol, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Lab Biodivers & Biogeog, Kunming 650204, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.Nanjing Univ, Coll Earth Sci, Nanjing 210093, Peoples R China 5.Univ Michigan, Univ Herbarium, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA
推荐引用方式 GB/T 7714	Guo, Shuang-Xing,Sha, Jin-Geng,Bian, Li-Zeng,et al. Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning, Northeast China[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2009,47(2):93-102.
APA	Guo, Shuang-Xing,Sha, Jin-Geng,Bian, Li-Zeng,&Qiu, Yin-Long.(2009).Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning, Northeast China.JOURNAL OF SYSTEMATICS AND EVOLUTION,47(2),93-102.
MLA	Guo, Shuang-Xing,et al."Male spike strobiles with Gnetum affinity from the Early Cretaceous in western Liaoning, Northeast China".JOURNAL OF SYSTEMATICS AND EVOLUTION 47.2(2009):93-102.