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前言介形类属节肢动物门甲壳纲,生活的水域很广,从深海、浅海、泻湖、湖泊、河流、水沟、沼泽至水坑中均有分布,特别是在浅海、湖泊及水池水沟中最为丰富.介形类种属繁多,不同的环境出现不同的类型,不同的时代有不同的种类.新生代有许多介形类科属延续至现代.因此浅海海底沉积物柱状样品中的介形类化石,对于恢复古环境,了解全新世浅海近岸带海水的涨落,是一类重要的化石.本文研究的材料系由中国科学院海洋研究所地质地貌研究室分析,于1965年6月寄给笔者鉴定研究的介形类化石.介形类样品取自渤海北部海底沉积物柱状岩芯中.取样钻
Foreshape belongs to the arthropod door crustaceans, living in a wide range of waters, from the deep sea, shallow sea, lagoons, lakes, rivers, ditches, swamps to the puddle are distributed, especially in shallow sea, lakes and pond ditches Among the most abundant types of genera, there are many kinds of genera, different types occur in different environments, and different types have different types in different ages.The Cenozoic has many kinds of genera that belong to the continuum to modern times.Therefore, Shaped fossils, is an important class of fossils for the restoration of paleoenvironment and understanding the fluctuations of the Holocene coastal waters near the shoal.The material studied in this paper was analyzed by the Geology and Geomorphology Laboratory, Institute of Oceanology, Chinese Academy of Sciences, and in June 1965 Sent to the author of the study of the identification of the type of fossil class.Organic samples taken from the northern seabed sediment column core in the Bohai Sea.