| 北京早白垩世东狼沟组非海相腹足类化石 |
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| 引用本文： | 单青生,潘云唐.北京早白垩世东狼沟组非海相腹足类化石[J].城市地质,1994(2):8-14,T001. |
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| 作者姓名： | 单青生 潘云唐 |
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| 作者单位： | 北京市地质研究所，中国科学院研究生院 |
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| 摘 要： | 本文所描述的腹足类化石采自北京西山早白垩世东狼沟组，共８属１３种，赋存于火山岩沉积夹层中，以Ｌｉｏｐｌａｃｏｄｅｓ，Ｂｉｔｈｙｎｉａ，Ｇａｌｂａ三属分子最为发育。与腹足类共生的有早白垩世的双壳类、介形虫类及鱼类化石。
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| 关 键 词： | 早白垩世 东狼沟组 腹足类 化石 |
FRESHWATER GASTROPODS FROM EARLY CRETACEOUS DONGLANGGOU FORMATION IN BEIJING |
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| Shan Qingsheng.FRESHWATER GASTROPODS FROM EARLY CRETACEOUS DONGLANGGOU FORMATION IN BEIJING[J].City Geology,1994(2):8-14,T001. |
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| Authors: | Shan Qingsheng |
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| Institution: | Shan Qingsheng(Geological institute of Beijing) Pan Yuntang(Graduate School of Chinese Academy of Science) |
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| Abstract: | The present paper is concerned with the fresh water gastropods collected from Donglanggou Formation in Western Hills in Beijing.The Donglanggou Formation,well exposed in Dahuichang and Xiazhuang districts,consists of gray-green,yellow-green,purple tuff,purplish-gray andesite,graygreen sedimentary tuff.The faund,including bivalvia,gastropods,ostracoda and fish,were firstly discovered,from this formation.The gastropod fauna collected from the middle part of the Donglanggou Formation include & genera and 13 species:Campeloma mongolica Martinson,Lioplacodes cf.cholnockyi(Schlesser),L.lijiagouensis Yu,Amnicola cf. yunnanensis Pan,Subtilistiata operculompalus Pan,S.xishanensis Martinson,Trochispira incerta pan,T.donglanggollensis Shan(sp.nov.),Probaicalia vitimensis Shan(sp.nov.),Bithynia cf leachioides Martinson,B.yunlongensis Pan,Galba aff.psudopalustris Martinson,G.cf.tongshanensis Pan.This gastropod assemblage is close to those from the Yixian Formation in the west of Liaoning Province and from the lower part of the Yantang Formation in Anhui Province.This fauna was bound up with the Rehol fauna,it can be infered as early Cretaceous.They were referred to as a sedimentary environmen in the sedimentary time of the Donglanggou Formation in short. |
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| Keywords: | Early Cretaceous Donglanggou Formation Gastropoda |
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