摘要
在河北省曲阳石炭一二叠纪地层中发现古植物化石29属62种,包括真蕨纲和种子蕨纲、楔叶纲、石松纲、瓢叶纲、苏铁纲、种子化石、科达纲、银杏纲.此古植物群华夏植物群的特点明显,纵向上可划分成5个古植物组合;演化具有阶段性,组合的变化与古地理6个演化阶段相适应.
The fossil plants under study were collected from the Upper Carboniferous and Permian of Quyang coalmine in Hebei province. The flora was composed of 62 species in 29 genera belonging to Filicopsida et Pteridospermopsida, Lycopsida, Noeggerathiales, Sphenopsida, Cycadopsida, Cordaitopsida, Ginkgopsida, and Seeds.
The flora is of a typical cathaysia flora, five assemblage zones corresponding to each lithologic formations are recongnizable according to the variation of abundance and the known stratigraphical rangs of the species. According to the five assembleg zones, the evolution of the paleaogeographical condition of the flora could be divided into five stages based on sedimentary feature and the characteristics of the fossil plant assemblages.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2006年第4期468-472,共5页
Journal of Hebei Normal University：Natural Science
基金
河北省教育厅博士基金资助项目(Jwb007)
河北师范大学科研基金资助项目(L2000Y14)
关键词
河北曲阳
石炭-二叠纪
植物群
古地理演化
Quyang
Carboniferous and Permian
cathaysia flora
evolution of paleaogeography
