贵州关岭生物群中发现完美的植物化石  

Discovery of intact fossil plants in the Guanling biota in Guizhou

作　　者：孟繁松[1] 李旭兵[1] 张振来[1] 陈辉明[1] 

机构地区：[1]中国地质调查局宜昌地质矿产研究所,湖北宜昌443003

出　　处：《地质通报》2003年第4期271-273,共3页Geological Bulletin of China

基　　金：中国地质调查局"中国古大陆环境变化及其年代;生物;层序;事件;化学和构造地层响应"项目(编号200113900072)成果之一。

摘　　要：In recent years,two species of fossil plants,i.e.Ctenozamites sarrani Zeiller and Equisetites arenaceus(Jaeger)Bronn,have been found for the first time in the Xiaowa Formation in Guanling County,Guizhou.They occur together with marine reptiles,crinoids,ammonites,bivalves,conodonts,fishes,brachiopods etc.The Xiaowa Formation is composed of a sequence of marine deposits,in which fossil plants may have been carried to the bay from the land not far from the coast by rivers and deposited there.This finding not only adds a new element to the Guanling biota,but also provides further evidence for determining this biota to be of Carnian age.In recent years,two species of fossil plants,i.e.Ctenozamites sarrani Zeiller and Equisetites arenaceus(Jaeger)Bronn,have been found for the first time in the Xiaowa Formation in Guanling County,Guizhou.They occur together with marine reptiles,crinoids,ammonites,bivalves,conodonts,fishes,brachiopods etc.The Xiaowa Formation is composed of a sequence of marine deposits,in which fossil plants may have been carried to the bay from the land not far from the coast by rivers and deposited there.This finding not only adds a new element to the Guanling biota,but also provides further evidence for determining this biota to be of Carnian age.

关 键 词：贵州 关岭生物群 植物化石 海生爬行动物 小凹组 晚三叠世 卡尼期 蓖羽羊齿属 似木贼属 

分 类 号：Q914.2[天文地球—古生物学与地层学] Q914.6[生物学—古生物学]