| 湘西黔东上奥陶统临湘组的三叶虫 |
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| 引用本文：项礼文,姬再良.1986.湘西黔东上奥陶统临湘组的三叶虫[J].地球学报,8(1):53-68. |
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| 中文摘要:湖南西部和贵州东部奥陶系临湘组,地层厚度甚小,但含有较丰富的三叶虫化石,经作者研究共计11个属15个种和2个未定种,其中包括1个新属Dayongia(gen.nov.)和7个新种:Madygenia exsculpta sp.nov.,Madygenia tuberculata sp.nov.,Davongia brevica gen.＆ sp.nov.,Dayongia longicephala gen.＆ sp.nov,Eobronteus hunanensis sp.nov.,Shuma-rdia songtaoensis sp.nov.,Encrinurells exsculpta sp.nov.。这个动物群除具有我国地方性色彩外,同时具有与欧洲动物群明显的近似性。其时代应属晚奥陶世,相当于欧洲Ashgill期。 |
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| UPPER ORDOVICIAN(ASHGILL) TRILOBITES FROM THE LINXIANG FORMATION OF WESTERN HUNAN AND EASTERN GUIZHOU |
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| Abstract:The meterials described in this paper were collected from a series of light yellow-green argillaceous or light grey nodular limestone about 1.5 m in thickness, exposed at Dayong of western Hunan and Songtao of eastern Guizhou. Among them one genus and seven species are new, including Madygenia exsculpta (sp. nov.), Madygenia tuberculata (sp. nov.), Dayongia brevica (gen. & sp. nov.), Dayongia longicephala (gen. & sp. nov.), Eobronteus hunanensis (sp. nov.), Shumardia songtaoensis (sp. nov.), Encrinurella exsculpta (sp. nov.). In comparison with related forms this faunule not onJy shows eastern Asiatic aspects but also strong European affinities. After a critical analysis, the authors are inclined to assign this faunule to Ashgill in age. |
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