桂西二叠纪-三叠纪之交含微生物岩剖面介形虫动物群研究

来源 :中国古生物学会古无脊椎动物学分会2017年度学术年会 | 被引量 : 0次 | 上传用户:hyp88_down
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笔者对广西西部的作登和坡决二叠纪-三叠纪之交剖面的微生物岩及其上下岩层产出的介形虫样品进行研究.通过对68个样品进行热酸解法处理,共获得介形虫实体标本2100余枚,选取1239枚保存较好的壳体进行扫描电镜照相并鉴定,其中作登剖面24属76种,坡决剖面26属79种.两个剖面的介形虫化石均以光滑壳体为主,含古足介目、平足介目和速足介目分子,除个别层位以外,速足介目的土菱介科分子在介形虫动物群中占统治地位.
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