| Affinities and functional morphology of the Middle Cambrian ornamented tubules from West Hunan, China |
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| 作者姓名： | ZHU Caif DONG Xiping |
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| 作者单位： | School of Earth and Space Sciences, Peking University, Beijing 100871, China;University of Petroleum, Beijing 102249, China,School of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| 基金项目： | 国家自然科学基金，the Laboratory of Paleobiology and Stratigraphy;Chinese Academy of Sciences，高等学校博士学科点专项科研项目 |
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| 摘 要： | Problematic phosphatic tubular microfossils with ornamented sculptures are documented to exist in limestones of the upper Middle Cambrian Huaqiao Formation at the Paibi section and the Wangcun section in West Hunan, China. Two morphological patterns, including Ornamented Tube Form I and Ornamented Tube Form II are described. Based on the analysis of the preservation, wall structure and composition of the fossils, it is deduced that these ornamented tubes may represent carapace spines of some Cambrian arthropods with phosphatic carapaces, such as bradoriid crustaceans. Analysis of functional morphology indicates that the sclerites may rather be considered of a defensive than grasping function on the original organism body.
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| 关 键 词： | Middle Cambrian ornamented tubes affinities functional morphology West Hunan |
Affinities and functional morphology of the Middle Cambrian ornamented tubules from West Hunan, China |
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| ZHU Caif,DONG Xiping.Affinities and functional morphology of the Middle Cambrian ornamented tubules from West Hunan, China[J].Progress in Natural Science,2004,14(10):907-911. |
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| Authors: | ZHU Caifa DONG Xiping |
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| Institution: | 1. School of Earth and Space Sciences, Peking University, Beijing 100871, China;University of Petroleum, Beijing 102249, China
2. School of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| Abstract: | Problematic phosphatic tubular microfossils with ornamented sculptures are documented to exist in limestones of the upper Middle Cambrian Huaqiao Formation at the Paibi section and the Wangcun section in West Hunan, China. Two morphological patterns, including Ornamented Tube Form I and Ornamented Tube Form II are described. Based on the analysis of the preservation, wall structure and composition of the fossils, it is deduced that these ornamented tubes may represent carapace spines of some Cambrian arthropods with phosphatic carapaces, such as bradoriid crustaceans. Analysis of functional morphology indicates that the sclerites may rather be considered of a defensive than grasping function on the original organism body. |
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| Keywords: | Middle Cambrian ornamented tubes affinities functional morphology West Hunan |
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