Anatomical reinvestigation of Archaeopteris macilenta from the Upper Devonian(Frasnian) of South China

作     者：Yun GUO De-Ming WANG(Key Laboratory of Orogenic Belts and Crustal Evolution,Department of Geology,Peking University,Beijing 100871,China) 

作者机构：( Key Laboratory of Orogenic Belts and Crustal Evolution Department of Geology Peking University Beijing 100871 China) 

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

年 卷 期：2011年第49卷第6期

页      面：590-597页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.40830211) 

主　　题：anatomy Archaeopteris Late Devonian palaeogeography progymnosperms South China. 

摘      要：Archaeopteris macilenta is one of the most widespread plants in the Late *** on fossils from the Frasnian Huangjiadeng Formation,Yichang District of Hubei Province,for the first time we study in detail the anatomy of this progymnosperm plant in South *** axes are protostelic with three xylem sympodia and lack secondary *** axes are eustelic,bearing eight sympodia and a thin band of secondary *** symmetrical sympodia of mesarch primary xylem produce traces of appendages in a spiral *** macilenta and ***(***)are dominant in the Frasnian and Famennian,*** with these two species from other tectonic plates indicate consistent stelar *** spread,continuous occurrence,and identical anatomy during the Late Devonian indicate that Archaeopteris survived the Frasnian-Famennian extinction *** this time,endemic genera and cosmopolitan taxa,including Archaeopteris,suggest the palaeogeographic isolation of South China and certain associations with other plates.