海南岛西北部早石炭世褶颊类三叶虫化石的发现及其古生物地层学意义  

Discovery of the Early Carboniferous Phychopariids (Trilobite) in Northwestern Hainan Island, and Its Palaeontologic and Stratigraphic Significances

作　　者：姚华舟[1] 袁金良[2] 张仁杰[1] 

机构地区：[1]宜昌地质矿产研究所,湖北宜昌443003 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《地质论评》2009年第5期614-619,共6页Geological Review

基　　金：国家自然科学基金资助项目(批准号40772022)的成果

摘　　要：海南岛西北部白沙县金波老村附近南好组第二段首次发现Australosutura sp.,Conophillipsia sp.,Hunanoproetus sp.,Linguaphillisia sp.,Weberiphillipsia cf.linguiformisYuan&Li,和Werberiphillipsia sp.等5属6种褶颊类三叶虫,据三叶虫生物地层年代确认,为分布广泛的早石炭世早期的属种。三叶虫化石的发现,不仅扩展了早石炭世三叶虫动物群的地理分布,而且为白沙地区南好组地层年代的修订及与岛内不同地区南好组的地层对比及与岛外同期地层的对比提供了精确的三叶虫生物地层的重要化石材料。Fairly well-preserved pygidiums and cephalon of phychopariids were discoveried for the first time from the middle-upper part of Member 2, Nanhao Formation, in Jinbolaocun Village, northwest of Hainan Island. They include Australosutura sp. , Conophillipsia sp. , Hunanoproetus sp. , Linguaphillisia sp. ,Weberiphillipsia cf. linguiformis Yuan ＆ Li, and W. sp. , and widely spread in Lower Carboniferous. The discovery of these trilobites offer some new information on the geological distribution of Lower Carboniferous trilobites in the world. In addition, it also provides the precise trilobite-biostratigraphic data for the revision of chronologic age of the Nanhao Formation, and the stratigraphic correlation of the Nanhao Formation both on the island and adjacent continent areas. Meanwhile this fauna is very similar to the Tournasian trilobites occurred in Rangari Limestone, the member of Tulcumba Sandstone New South Wales, Australia. They may belong to the same palaeobiogeographic province.

关 键 词：南好组 下石炭统 杜内阶 褶颊类 三叶虫 海南岛 

分 类 号：Q915[天文地球—古生物学与地层学]