| 广西泥盆纪的窄鳞鱼类化石 |
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| 引用本文： | 刘时藩.广西泥盆纪的窄鳞鱼类化石[J].古脊椎动物学报,1980(2). |
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| 作者姓名： | 刘时藩 |
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| 作者单位： | 中国科学院古脊椎动物与古人类研究所 |
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| 摘 要： | 本文记述了采自广西南宁、横县、博白等地的窄鳞鱼类(Arctolepida)的一些标本。根据它们的形态特征的比较,暂分别归属于一新属新种,郁江拟威氏鱼(Parawilliamsaspis yuiangen-sis gen.et sp.nov.);菲里克特鱼亚科的未定属种(Phlyctaenaspinae indet.);窄鳞鱼类的胸刺。对于这些化石的古地理学及地层对比上的意义,也作了初步的讨论。
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ON SOME ARCTOLEPIDS FROM THE DEVONIAN OF GUANGXI |
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| Abstract: | A few fragments of arctolepids from the Devonian of Guangxi are described hereas Parawilliamsaspis yujiangensis,new gen.and sp.,Phlyctaenaspinae indet.andArctolepida indet.The new genus,Parawilliamsaspis,is characterized by its long trunk shield,itsflat ventral shield and the trapezoid cross section.Spinal plate placed fairly low onside,without free end.Howover,as the specimen was incompletely preserved,manyof its morphological characters remaind unknown.Parawilliamsaspis is here describedas a genus tentatively referred to Arctolepida.On the basis of the discovery of arctolepids in Guangxi,three related problems arediscussed in this paper:1)Lower Devonian stragtigraphic correlation between Chinaand other regions of the world,2)the age of Bothriolepis,and3)palaeogeographicsignificance of newly described fossils. |
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