【作者】 王自强； 王立新；

【Author】 Wang Ziqiang (Tianjin Institute of Geology and Mineral Resources,CAGS) Wang Lixin (Bureau of Geology and Mineral Resources of Shanxi Province)

【机构】 天津地质矿产研究所； 山西省地质矿产局；

【摘要】 本文描述华北石千峰群下部晚二叠世孙家沟组植物化石30个属44个种(新属1,新种17), 其中有相当多的属种系据显微特征鉴定。文中结合化石的组成特征和化石产地的埋藏特征,初步总结了华北二叠纪末期的植被类型,据此提名为 Ullmannia bronnii-Yuania magnifolia 组合,代表华北古生代最晚期植物群．最后,对有关此植物群的欧美区系性质,华北古植代与中植代间的演替,和此植物群中若干安加拉分子出现的意义等重要问题,作了详尽的讨论．更多还原

【Abstract】 INTRODUCTION In last ten years,a series of short articles have preliminarily revealed the essential nature of Permo-Triassic plants from the Shiqianfeng(石千峰)Group in North China(Wang Lixin et a1.1978;Wang Ziqiang & Wang Lixin,1982; Wang Ziqiang,1984,1985).Some time ago,an investigation and a re-examina- tion of a large amount of plant remains from this Group have been carried out by the authors.Two memoirs with detailed study will be published for research of the full material,of which the present one deals with the latest Permian Sun- jiagou(孙家沟)flora from the lower part of the Group and the other one with the early Triassic floras from the middle and upper parts of the Group named as the Liujiagou(刘家沟)flora and the Heshanggou(和尚沟)flora.更多还原