摘要
研究记录了新疆吐哈盆地三道岭煤田西山窑组的 4 3属 86种植物化石。该植物化石组合以真蕨和银杏类最为繁盛 ,苏铁类和松柏类较发育 ,楔叶类较少 ,另有少量苔藓类和石松类。真蕨类又以蚌壳类占优势 ,出现大量中侏罗世分子 ,属于中国北方温带植物地理区 Coniopteris—Phoenicopsis植物群的典型组合 。
A plantfossil assemblage of86speciesbelonging to4 3genera isreported from the Xishanyao Formation of the Turpan- Hami Basin,Xinjiang,Northwest China in the paper.The plant assemblage is dominated by ferns and Ginkgoposida which are represented by2 2 species respectively.Among the ferns,the Dicksoniaceaeis the most predominated group including 8species.Cycadopsida with 1 3 species consists 1 5 .1 % ,and Coniferopsida with1 5 species makes up1 7.4 % of the assemblage,while Sphenopsida is a smaller group of6 species.The stratigraphical distribution ofthe main elementsshowsthatthe assemblage isthe Middle Jurassic in age,possibly Aalenian- Bajocian,and indicates a warm and humid climate.
出处
《现代地质》
CAS
CSCD
北大核心
1999年第4期403-407,共5页
Geoscience
基金
中国石油天然气集团公司"九五"科技工程项目!(项目号 :Z95 -5 -1B)
国家自然科学基金项目!(项目号 :49872 0 0 8)资助
