陕南张家沟剖面寒武纪早期微体化石Hexaconularia sichuanensis的新材料
NEW MATERIALS OF EARLY CAMBRIAN MICROFOSSILS HEXACONULARIA SICHUANENSIS FROM ZHANGJIAGOU SECTION IN SOUTHERN SHAANXI
查看参考文献27篇
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文摘
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陕南西乡张家沟剖面的寒武系下部岩层中发现了大量原始锥石类,根据整体形态特征和原始锥石类化石分类方案将其归属到六方锥石属Hexaconularia。前人对于六方锥石分类方案众多,本文对其进行重新厘定。本文报道的六方锥石新材料在中央锥面上具有两条不连续的角沟,这不仅丰富了种内特征,而且为六方锥石的壳体演化趋势提供了依据。前人发现的该类化石与本文描记的化石类型相同,产地不同,因而具有地层对比意义。 |
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其他语种文摘
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A large number of protoconulariid fossils were found in the lower Cambrian strata of Zhangjiagou Section in Xixiang,South Shaanxi. According to its overall morphological and the classification of protoconulariid fossils which belong to Hexaconularia. Predecessors made many classifications about Hexaconularia, but we reclassified it. There are two shallow and discontinuous corner grooves at the central face. This not only enriches the intraspecific characteristics, but also provides the basis for the evolution trend of shell. The same type as fossils described in this article have been reported by predecessors but from different places, thus it has important research meaning to the stratigraphic comparison. |
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来源
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古生物学报
,2017,56(4):433-439 【核心库】
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关键词
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六方锥石
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原始锥石类
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口部
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宽川铺组
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梅树村期
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地址
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1.
长安大学地球科学与资源学院, 现代古生物学和地层学国家重点实验室, 西安, 710054
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长安大学地球科学与资源学院, 现代古生物学和地层学国家重点实验室;;陕西省早期生命与环境重点实验室, 西安, 710054
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长安大学地球科学与资源学院, 西安, 710054
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0001-6616 |
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基金
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国家自然科学基金
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中国科学院南京地质古生物研究所现代古生物学和地层学国家重点实验室基金
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大学生创新训练项目
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质量工程项目
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文献收藏号
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CSCD:6146438
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