| 山东平邑官庄组的非海栖软体动物化石 |
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| 引用本文： | 李云通.山东平邑官庄组的非海栖软体动物化石[J].地球学报,1986,8(1):69-83. |
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| 作者姓名： | 李云通 |
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| 作者单位： | 中国地质科学院地质研究所 |
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| 摘 要： | 官庄组按岩性分为上、中、下三段。软体动物化石产于该组中段。主要化石计有双壳类1属1种;腹足类11属14种,其中包括1个新属、4个新种和1个新亚种。
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NON-MARINE MOLLUSCA FROM GUANZHUANG FORMATION IN PINGYI COUNTY, SHANDONG PROVINCE |
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| LI Yun-tong.NON-MARINE MOLLUSCA FROM GUANZHUANG FORMATION IN PINGYI COUNTY, SHANDONG PROVINCE[J].Acta Geoscientia Sinica,1986,8(1):69-83. |
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| Authors: | LI Yun-tong |
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| Institution: | Institute of Geology, CAGS |
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| Abstract: | The non-marine mollusca dealt with in the present paper were collected by the author and others in 1981 from the second member of Guanzhuang Formation in Pngyi County of Shandong Province. The collection comprises 15 species in 12 genera, including 1 new genus, 4 new species and 1 new subspecies as listed below: Lioplax compta (sp. nov.), Hydrobia bianqiaoensis (sp. nov.), Pingyispira delicata (gen. et sp. nov.), Pingyispira vesca (gen. et sp. nov.)and Physa exquisita bianqiaoensis (subsp. nov.). This molluscan fauna is dominated by aquatic species and the most of them are seen in the second member of Guanzhuang Formation in Mengyin County and Wutu Formation in Changle County, so the author believes that the sedimentary enviroment of the molluscan fossil-bearing beds represents the non-marine facies, and these beds and those of the second member of Guanzhuang Formation in Monyin County and Wutu Formation in Changle County are probably the same in stratigraphical sequence and their geological age belongs to the Eocene, most probably lower Eocene. |
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