重庆北碚长兴期腕足动物群落的划分及其地层意义CHANGHSINGIAN BRACHIOPOD PALEOCOMMUNITIES IN BEIBEI,CHONGQING AND THEIR BIOSTRATIGRAPHIC SIGNIFICANCE
曾勇,王茵,陈松
摘要(Abstract)：
重庆北碚地区晚二叠世长兴期地层出露良好,剖面位于北碚代家沟东北部,经过详细调查研究,在厚度为110.5m的长兴组石灰岩地层中发现有丰富的腕足动物,共有28属46种。按照识别与划分化石群落的5个基本条件,本区长兴期腕足动物可以划分为3个化石群落,本区长兴期生态地层建立3个化石群落带,自上而下为:Uncinunellina-Peltichia带、Haydenella-Perigeyerella带、Oldhamina-Meekella带。从而将本区长兴期地层三分。
关键词(KeyWords)： 腕足动物;化石群落带;长兴期;二叠纪;北碚;重庆
基金项目(Foundation): 现代古生物学和地层学国家重点实验室资助课题(No.073109)
作者(Author): 曾勇,王茵,陈松
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