Oligocarpia kepingensis *** the Lower Permian of the northern Tarim Basin,Xinjiang and its in situ spores

作     者：Yongdong Wang Xiuyuan Wu 

作者机构：Chinese Acad Sci Nanjing Inst Geol & Palaeontol Nanjing 210008 Peoples R China 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：1999年第44卷第2期

页      面：108-112,193页

核心收录：

学科分类：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] 

基　　金：Chinese Academy of Sciences,CAS China Postdoctoral Science Foundation State Key Laboratory of Palaeobiology and Stratigraphy,LPS 

主　　题：Oligocarpia Gleicheniaceae Permian Xinjiang. 

摘      要：A Palaeozoic gleicheniaceous fern Oligocarpia kepingensis sp. nov. is described from the Lower Permian of the northern Tarim Basin, Xinjiang, China. The material comprises fertile organs including sori, sporangia, spores and associated sterile leaf of the Sphenopteris type. The sori are circular and 0.6—0.8 mm in diameter, and each sorus consists of 4—6 oval sporangia without an indusium. A transverse annulus completely encircles the sporangium. Each sporangium produces probably 256 trilete spores resembling the dispersed genus Leiotriletes. Comparisons are made between O. kepingensis and other species of Oligocarpia in the soral organization and spores. It is reasonable to include Oligocarpia in Gleicheniaceae based on its similarities of fertile character to the extant gleicheniaceous members.