Schmeissneria:An angiosperm from the Early Jurassic

作     者：1,2Xin WANG 1(Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China) 2(Fairylake Botanical Garden,Shenzhen 518004,China) 

作者机构：(Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing 210008 China) (Fairylake Botanical Garden Shenzhen 518004 China) 

出 版 物：《Journal of Systematics and Evolution》 (植物分类学报(英文版))

年 卷 期：2010年第48卷第5期

页      面：326-335页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by the National Natural Science Foundation of China(GrantNos.40772006,40372008,40632010,and J0630967) the Scientific Research Foundation for Returned Overseas Chinese Scholars,State Education Ministry,China a contribution to UNESCO-IUGS International Geological Correlation Programme 506 

主　　题：angiosperm earliest evolution flower fossil Germany Jurassic origin. 

摘      要：The origin of angiosperms has been a focus of intensive research for a long *** so-called pre-Cretaceous angiosperms,including Schmeissneria,are usually clouded with *** expel the cloud around the enigmatic Schmeissneria,the syntype and new materials of Schmeissneria collected previously in Germany and recently in China are *** materials include female inflorescences and *** latter are old materials but were under-studied *** microscopy and scanning electron microscope observations indicate that the fruits in these infructescences have in situ seeds enclosed,and that the ovaries are closed be fore *** the plants meet two strict criteria for angiosperms:angiospermy plus *** Schmeissneria in angiosperms will extend the record of angiosperms up to the Early Jurassic,more compatible with many molecular dating conclusions on the age of angiosperms,and demanding a reassessment of the current doctrines on the origin of *** the phylogenetic relationship of Schmeissneria to other angiosperms apparently is still an open question,this study adds to research concerning the origin of angiosperms.