| 辽宁本溪中三叠世苏铁类密脉中国似查米亚 |
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| 引用本文： | 韩明慧,张宜,郑少林,王永栋,王沛颖,杨佳林.辽宁本溪中三叠世苏铁类密脉中国似查米亚[J].地质与资源,2018,27(1):22. |
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| 作者姓名： | 韩明慧 张宜 郑少林 王永栋 王沛颖 杨佳林 |
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| 作者单位： | 1.沈阳师范大学 古生物学院, 辽宁 沈阳 110034;2.国土资源部东北亚古生物演化重点实验室, 辽宁 沈阳 110034;3.中国地质调查局 沈阳地质调查中心, 辽宁 沈阳 110034;4.中国科学院 南京地质古生物研究所, 江苏 南京 210008 |
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| 基金项目： | 国家自然科学基金项目"辽宁本溪中三叠世林家植物群系统研究"(编号31470324);辽宁省大学生实践教育基地建设项目"沈阳师范大学-沈阳地质调查中心古生物学实践教育基地"(编号10166041701);沈阳师范大学大学生创新创业训练计划"辽宁本溪中三叠世中国似查米亚的研究" |
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| 摘 要： | 中国似查米亚属Sinozamites Sze是中国北方中、晚三叠世苏铁植物门Cycadophyta代表成分之一.自该属发现以来，该属在分类上属于苏铁目还是本内苏铁目一直不清楚.本文对产于辽宁本溪中三叠世林家组的密脉中国似查米亚S.myrioneurus表皮构造进行了研究.由于标本未保留角质层，故选择超景深显技术，发现该属气孔器属于单唇型，从而确立了该属植物属于苏铁目.研究过程中，既用盐酸又用硝酸来清除化石表面杂质.另根据已有的标本所显示的裂片和羽轴上下过渡关系，对该种羽片进行了部分重建.在此基础上，系统比较了类似的苏铁植物.
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| 关 键 词： | 中三叠世 林家植物群 中国似查米亚属 苏铁目 超景深技术 辽宁省 |
| 收稿时间： | 2018-01-01 |
Sinozamites myrioneurus (CYCADALES) FROM THE MIDDLE TRIASSIC STRATA IN BENXI,LIAONING PROVINCE |
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| HAN Ming-hui,ZHANG Yi,ZHENG Shao-lin,WANG Yong-dong,WANG Pei-ying,YANG Jia-lin.Sinozamites myrioneurus (CYCADALES) FROM THE MIDDLE TRIASSIC STRATA IN BENXI,LIAONING PROVINCE[J].Geology and Resources,2018,27(1):22. |
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| Authors: | HAN Ming-hui ZHANG Yi ZHENG Shao-lin WANG Yong-dong WANG Pei-ying YANG Jia-lin |
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| Institution: | 1.College of Palaeontology, Shenyang Normal University, Shenyang 110034, China;2.Key Laboratory for Evolution of Palaeobios in Northeast Asia, Ministry of Land and Resources, Shenyang 110034, China;3.Shenyang Institute of Geology and Mineral Resources, CGS, Shenyang 110034, China;4.Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | Sinozamites Sze 1956 is one of the representative genera of Cycadophyta, which includes Cycadales and Bennettitales, in the Middle and Late Triassic strata in northern China. However, the systematic position of the genus has long been unclear since it was erected. In this article, the epidermal structure of S. myrioneurus from the Middle Triassic Linjia Formation of Benxi, Liaoning, is deciphered by stereo microscope with large depth-of-field technique. Both hydrochoric and nitric acid are used to remove surface impurities for clearer images. Based on the stomatal apparatus of haplocheilic type, the genus is assigned to Cycadales. The missing part of the S. myrioneurus leaf is reconstructed according to the contextual relation of leaf segments and rachises shown on the existing specimen. At the end, the authors systematically compare fossils and extant Cycadophytes with similar names and morphologies to the genus Sinozamites. Besides the above results, this study also develops the large depth-of-field technique. With such technique, more epidermal structures of fossil plants and their systematic positions will be expectedly deciphered. |
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| Keywords: | Middle Triassic Linjia flora Sinozamites Cycadales large depth-of-field technique Liaoning Province |
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