| 蓟县高于庄组燧石中原位保存的单细胞微体化石新类型 |
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| 关键词:Changcheng System Gaoyuzhuang Formation unicellular microfossils Jixian County Middle Proterozoic |
| 基金项目:中国地质调查局地质调查项目“冀北前寒武纪微体化石研究”（编号：200313000052） |
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| 摘要: |
| A New Type of Primary Unicellular Microfossils from the Chert of the Gaoyuzhuang Formation in Jixian County, Tianjin |
| The microfossils were found in the black chert from Gaoyuzhuang Formation of Middle Proterozoic Changcheng System in Jixian County. The fossil body assumes a pneumatic boat-like form, with both ends being perfectly round, and the length ranging commonly from 8 to 17 μm, 2 times as long as the width. There is a longitudinal slit that occupies 1/3 of the specimen width. The specimen is characterized by the symmetry of both sides, and the axis is the longitudinal slit. The longitudinal slit probably has the function of releasing endospore. From the complicated structure, it can be inferred that these organisms might be of eukaryote. The above-mentioned fossils have been reported for the first time from Gaoyuzhuang Formation of Middle Proterozoic Changcheng System in Jixian County. |
| CAO Fang.2005.A New Type of Primary Unicellular Microfossils from the Chert of the Gaoyuzhuang Formation in Jixian County, Tianjin[J].Acta Geoscientica Sinica,26(6):547-551. |
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