摘要
义马组植物群银杏纲、真蕨纲极度繁盛,楔叶纲、苏铁纲和松柏纲也占有一定的数量,属典型的北方早、中侏罗世的Coniopteris-Phoenicopsis植物群,其时代应属中侏罗世早期,即巴柔期至巴通期早期。并对该区义马组下含煤段植物群古生态进行了初步分析。
The flora of Yima Formation is dominated by Ginkgopsida and Filicopsida,and Sphenopsida, Cycadopsida,and Coniferopsida also occupies an important position in this flora. The age of the flora is the early Middle Jurassic──Bajocian to early Bathonial. The floral paleoecology of the lower member of Yima Formation is also preliminary analyzed.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1995年第1期109-112,共4页
Journal of China Coal Society
基金
煤炭科学基金
关键词
义马组
植物群
古生态
侏罗纪
Yima area, Yima Formation, flora, paleoecology, early Middle Jurassic