摘要
依据24口钻井及4条地表剖面372个样品的采集和分析,三水盆地晚白垩世的介形类动物群含介形类化石28属81种,本文描述其中24属62种,包括1新种。此介形类动物群在数量上以女星介科和玻璃介科最繁盛,次为背足介科、湖花介科和类女星介科,依其横向分布及纵向变化规律,划分为Talicypridea和Porpocypris两个动物群及Talicypridea amoena带、Porpocypris globra带和Porpocypris sphaeroidalis带等3个化石带。依据介形类化石三水组可与南雄群对比,时代属晚白垩世早—中期。大塱山组与上湖组坪岭段对比,时代应属晚白垩世晚期。
The abundant Late Cretaceous ostracods has been described based on 372 samples from 24 boreholes and four outcrop sections of the Upper Cretaceous Sanshui and Dalangshan Formations in the Sanshui Basin, Guangdong Province, Southern China. Sixty-two species （including one new species） in 24 genera are figured herein. There are two ostracod faunas and three biozones recognized in ascending order： the Talicypridea fauna （i. e. , the Talicyp- ridea arnoena Zone） and the Porpocypris fauna （subdivided into P. globra and P. sphaeroidalis zones）. According to the ostracod zonations the Sanshui and Dalangshan formations could be respectively correlated with the Nanxiong Group （early-middle Late Cretaceous） and the Pingling Member of the Shanghu Formation late Late Cretaceous of the Nanxiong Basin, northern Guangdong Province.
出处
《微体古生物学报》
CSCD
北大核心
2008年第2期132-165,共34页
Acta Micropalaeontologica Sinica
基金
科技部国家重点基础发展规划项目(No2006CB701403)
国家自然科学基金项目(No40572005)资助
关键词
介形类
晚白垩世
三水盆地
广东
ostracods, Upper Cretaceous, Sanshui Basin, Guangdong
