A kind of coccoid dinoflagel-lates-like fossils gives a new explanation of source of dinosterane in the Early-Middle Cambrian  

作　　者：BIAN Lizeng, ZHANG Shuichang, ZHANG Baomin, MAO Shaozhi & YIN LeimingDepartment of Earth Sciences, Nanjing University, Nanjing 210093,China Key Laboratory of Petroleum Geochemistry, China National Petroleum Corporation, Beijing 100083, China Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing 100083, China China University of Geosciences, Beijing 100083, China Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China 

出　　处：《Chinese Science Bulletin》2001年第5期420-423,442,共5页

基　　金：the National Science-Technology Project of the Nineth Five-Year Plan of China: "95-111-01" ; the Stanford-China industrial affiliates ; the Stanford molecular organic geochemistry industrial affiliates programs.

摘　　要：The coccoid fossils covered with thick gelatinous envelop containing several gametes are discovered in gyps and salt deposits of Cambrian, H4 well and chert bed of the base of Yuertus Formation (∈11) of Xiaoerbulake Section. The fossils are described and compared with coccoid dinoflagellates. These fossils may be a coccoid life-cycle stage (vegetative cyst) of coccoid dinoflagellates. If this identification is correct, the coccoid dinoflagellates-like fossils could give a reasonable explanation of the dinoflagellate-specific biomarkers from Cambrian, H4 well, Tarim Basin.The coccoid fossils covered with thick gelatinous envelop containing several gametes are discovered in gyps and salt deposits of Cambrian, H4well and chert bed of the base of Yuertus Formation (∈11) of Xiaoerbulake Section. The fossils are described and compared with coccoid dinoflagellates. These fossils may be a coccoid life-cycle stage (vegetative cyst) of coccoid dinoflagellates. If this identification is correct, the coccoid dinoflagellates-like fossils could give a reasonable explanation of the dinoflagellate-specific biomarkers from Cambrian, H4 well, Tarim Basin.

关 键 词：COCCOID dinoflagellates-like FOSSILS dinoflagellate-specific biomarkers Cambrian TARIM Basin. 

分 类 号：P618.13[天文地球—矿床学]