广东南雄盆地罗佛寨群的介形类动物群

OSTRACOD FAUNAS FROM THE LUOFOZHAI GROUP IN THE NANXIONG BASIN OF GUANGDONG PROVINCE,CHINA

作者依据坪岭、武台岗、罗佛寨、城南、枫门坳、修仁、黄茅坪、暖水塘等8条剖面725个样品的研究,系统描述了罗佛寨群的介形类化石21属78种,包括2个新种;建立了罗佛寨群介形类序列,自下而上划分出Porpocyprisglobra,Porpocypris sphaeroidalis,Cypris concina,Sinocypris excelsa和Cyprois reniformis5个介形类化石带。前两个带合称Porpocypris动物群,时代属晚白垩最晚期。后三带称为Cypris-Sinocypris动物群,时代分别为早、中、晚古新世。

This study is based on 725 ostracod samples systematically collected from eight profiles of the Upper Cretaceous--Palaeogene Luofozhai Group at Pingling, Wutaigang, Luofozhai, south to Nanxiong town, Fengmenao, Xiuren, Huangmaoping and Nuanshuitang in Nanxiong of Guangdong Province, Southern China. 78 ostracod species （including two new species） in 21 genara are described from the Luofozhai Group. Two ostracod faunas and five zones are recognized in ascending order： the latest Cretaceous Porpocypris fauna （subdivided into P. globra and P. sphaeroidalis zones） and the Palaeocene Cypris-Sinocypris fauna （subdivided into Cypris concina, Sinocypris excelsa and Cyprois reniforrnis zones, corresponding to the Early, Middle and Late Palaeocene）.