New observation on seed/ovule position in the fruit of Archaeanthus and its systematic implications  

作　　者：Xin Wang 

机构地区：[1]State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment,Chinese Academy of Sciences,Nanjing 210008,China

出　　处：《China Geology》2021年第4期752-755,共4页中国地质（英文）

基　　金：This research was supported by the Strategic Priority Research Program(B)of the Chinese Academy of Sciences(XDB26000000);and the National Natural Science Foundation of China(41688103,91514302).

摘　　要：1.Introduction Angiosperms are the most important group of plants in the current earth ecosystem.However,little is known about the origin of angiosperms,which has been a headache for many botanists.The core question in the origin of angiosperms is the homology of carpels.Formerly,Arber EAN and Parkin J(1907)speculated that the carpels in angiosperms were derived from the former megasporophylls bearing ovules along their margins.

关 键 词：HEADACHE ecosystem. OVULE 

分 类 号：Q944.59[生物学—植物学]