| Sponge spicules in phosphorites of the Early Cambrian Gezhongwu Formation, Zhijin, Guizhou |
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| 引用本文： | YANG Ruidong,QIAN Yi,ZHANG Jie,ZHANG Weihu,JIANG Lijun,GAO Hui. Sponge spicules in phosphorites of the Early Cambrian Gezhongwu Formation, Zhijin, Guizhou[J]. 自然科学进展(英文版), 2004, 14(10): 896-902. DOI: 10.1080/10020070412331344521 |
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| 作者姓名： | YANG Ruidong QIAN Yi ZHANG Jie ZHANG Weihu JIANG Lijun GAO Hui |
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| 作者单位： | Guizhou University of Technology, Guiyang 550003, China,Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China,Guizhou University of Technology, Guiyang 550003, China,Guizhou University of Technology, Guiyang 550003, China,Guizhou University of Technology, Guiyang 550003, China,Guizhou University of Technology, Guiyang 550003, China |
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| 基金项目： | 国家重点研究项目，科技部资助项目，国家自然科学基金，中国博士后科学基金 |
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| 摘 要： | Phosphorites occurring at the bottom of the Cambrian system contain abundant small shelly fossils, which are the product of the first episode of life explosion in the Cambrian. It was previously reported that the small shelly fossils are dominated by hyolithids, olivooids, zhijinitids, conodontomorphs, yubelichitids, camenitids and algae, with minor amounts of sponge fossils. Large amounts of sponge spicules, diverse in form, have been found for the first time in the Gezhongwu Formation phosphorites at Shixing, Zhijin County, Guizhou Province, of which such spicules as diaxon-triactins, diaxon-tetractins, pentaxon-pentactins and hexon-hexactins account for 30%. These spicules constitute the sponge clastic phosphorites made up of sponge clastics. Meanwhile, it is also expected that the radiation and diversity of sponge animals started as early as in the earliest Early Cambrian. Habit and burying environment of sponge animal are discussed in the paper.
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| 关 键 词： | sponge animal Gezhongwu Formation Early Cambrian Guizhou |
Sponge spicules in phosphorites of the Early Cambrian Gezhongwu Formation, Zhijin, Guizhou |
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| YANG Ruidong,QIAN Yi,ZHANG Jie,ZHANG Weihua,JIANG Lijun,GAO Hui. Sponge spicules in phosphorites of the Early Cambrian Gezhongwu Formation, Zhijin, Guizhou[J]. Progress in Natural Science, 2004, 14(10): 896-902. DOI: 10.1080/10020070412331344521 |
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| Authors: | YANG Ruidong QIAN Yi ZHANG Jie ZHANG Weihua JIANG Lijun GAO Hui |
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| Affiliation: | 1. Guizhou University of Technology, Guiyang 550003, China
2. Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | Phosphorites occurring at the bottom of the Cambrian system contain abundant small shelly fossils, which are the product of the first episode of life explosion in the Cambrian. It was previously reported that the small shelly fossils are dominated by hyolithids, olivooids, zhijinitids, conodontomorphs, yubelichitids, camenitids and algae, with minor amounts of sponge fossils. Large amounts of sponge spicules, diverse in form, have been found for the first time in the Gezhongwu Formation phosphorites at Shixing, Zhijin County, Guizhou Province, of which such spicules as diaxon-triactins, diaxon-tetractins, pentaxon-pentactins and hexon-hexactins account for 30%. These spicules constitute the sponge clastic phosphorites made up of sponge clastics. Meanwhile, it is also expected that the radiation and diversity of sponge animals started as early as in the earliest Early Cambrian. Habit and burying environment of sponge animal are discussed in the paper. |
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| Keywords: | sponge animal Gezhongwu Formation Early Cambrian Guizhou |
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