A note on fructification of Plagiozamites Zeiller (Noeggerathiales) based on association  

作　　者：Jun WANG 

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

出　　处：《Global Geology》2008年第3期115-124,共10页世界地质（英文版）

基　　金：Project KZCX2-SW-105 of Chinese Academy of Sciences;the National Natural Science Foundation of China (Nos.40572008 and40621062);the Major Basic Research Project of Ministry of Science and Technology of China(No.2006CB806400)

摘　　要：The fructification of the noeggerathialean foliage Plagiozamites is very likely a cylindric strobilus based on close associations from the Early Permian Lower Shihhotse Formation of Weibei Coalfield in Shaanxi and Dengfeng Coalfield in Henan. The strobilus is articulated. Sporophylls arise from the node, with the proximal parts slightly united and with a tight angle to the axis; distal parts upturned pointing upwards and nearly parallel to the axis, coveting the neighboring sporophylls of the next node. A sessile sporangium is situated at the adaxial side of each sporophyll. There are 12-16 sporangia and sporophylls in each node. This type of strobilus may have been identified as some sphenophyllalean/equisetalean cones in previous study.The fructification of the noeggerathialean foliage Plagiozamites is very likely a cylindric strobilus based on close associations from the Early Permian Lower Shihhotse Formation of Weibei Coalfield in Shaanxi and Dengfeng Coalfield in Henan. The strobilus is articulated. Sporophylls arise from the node, with the proximal parts slightly united and with a right angle to the axis; distal parts upturned pointing upwards and nearly parallel to the axis, covering the neighboring sporophylls of the next node. A sessile sporangium is situated at the adaxial side of each sporophyll. There are 12-16 sporangia and sporophylls in each node. This type of strobilus may have been identified as some sphenophyllalean/equisetalean cones in previous study.

关 键 词：FRUCTIFICATION Plagiozamites Noeggerathiales PERMIAN 

分 类 号：Q914[天文地球—古生物学与地层学]