海南岛的Cystophrentis-Pseudouralinia间隔带及三叶虫化石  

Cystophrentis-Pseudouralinia Interval Zone of Hainan Island and Bearing Trilobites

作　　者：张仁杰[1] 吴健辉[2] 姚华舟[1] 

机构地区：[1]中国地质调查局宜昌地质研究所,宜昌443003 [2]湖北国土资源职业学院,荆州434000

出　　处：《科学技术与工程》2009年第22期6630-6633,共4页Science Technology and Engineering

基　　金：国家自然科学基金(40772022)资助

摘　　要：根据Siphonodella levis(Ni) Polygnathus cf..inornatus E.R.Branson等牙形刺化石,海南岛白沙县金波老村附近南好组第二段中上部确定为下石炭统杜内早期,与Cystophrentis—Pseudourlinia间隔带底部层位相当。共同产出的Weberiphillipsia cf.linguiformis Yuan & Li,Weberiphillipsia sp.,Linguaphillipsia sp.,Hunanoproetus sp.,Austrulosutura sp.,Conophillipsia sp.等系海南岛首次发现的早石炭世三叶虫化石。它与澳大利亚新南威尔士同期三叶虫很相似,可能属同一古生物地理区。On the basis of conodonts Siphonodella levis and Polygnathus cf.inornatus,the middle-upper part of Member 2,Nanhao Formation,Jinbolaocun Village,Baisha County,northwest of Hainan island is now placed into Early Carboniferous,and may be correlated with the lower part of Cystophrentis-Pseudouralinia Interval zone of South China.The fairly well—preserved pygidiums and cephalons of trilobites including Australosutura sp.,Conophillipsia sp.,Hunanoproetus sp.,Linguaphillisia sp.,Weberiphillipsia cf.linguiformis Yuan ＆ Li, and W. sp. occurred together with those conodonts. That Lower Earboniferous trilobite fauna is known for the first time on Hainan Island, and 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：Cystophrentis—Pseudouralinia间隔带 三叶虫 海南岛 

分 类 号：P534.45[天文地球—古生物学与地层学]