A'/> Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China
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首页> 外文期刊>Palaeogeography, Palaeoclimatology, Palaeoecology: An International Journal for the Geo-Sciences >Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China
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Upper Ordovician conodont biostratigraphy and biofacies from the Sigang section, Neixiang, Henan, central China

机译：上奥陶涅迪康诺·河南省新乡，中部河南省新康段生物对象和生物佳肴

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Abstract The 186-m-thick Shiyanhe Formation exposed at the Sigang section, Neixiang area, Henan Province, central China has been investigated for conodonts. The collected 33 samples yielded 8858 conodont specimens. The conodonts are referred to 15 genera and 34 species, but four species cannot be positively identified and one taxon is kept in open nomenclature. The Oulodus ulrichi, the Oulodus robustus, the Aphelognathus grandis and the Aphelognathus divergens conodont biozones are introduced and the conodont fauna and biozones of the Shiyanhe Formation are referred to the Katian Stage (Stage slices Ka2–Ka4) of the Upper Ordovician. The presence of biostratigraphically important species of the genera Aphelognathus, Oulodus and Yaoxianognathus allows for the recognition of the previously defined local conodont biozones that were established from the studied section. Regionally, the Shiyanhe Formation fauna is relatively similar to the contemporaneous faunas from the Tarim terrane in western China and from the southwestern margin of the North China Platform. However, the faunal composition also shows a close affinity to the North American Midcontinent Province and correlation to North America is clear. The conodont fauna is dominated by the species of Aphelognathus, Belodina, Drepanoistodus, Oulodus, Panderodus, Phragmodus, “Plectodina
机译：<！[cdata [ 抽象 在中国中部河南省内乡地​​区的三岗段暴露的186米厚的Shiyanhe形成已被调查康塞特。收集的33个样品产生8858个康塞格标本。胚源被称为15属和34种，但是四种物种不能积极鉴定，一个分类股在开放的命名中保持。 ooulodus ulrichi ， ooulodus rubustus ，斜视大教堂grandis 和 Aphelognathus divergens 卵石突出的生物区域，巩膜组合和什叶河形成的生物区称为上奥陶诺维安的Katian阶段（阶段切片Ka2-Ka4）。生物的生物学性重要物种的存在 aphelognathus ， onoulodus 和 yaoxianognathus 允许识别从研究部分建立的先前定义的局部统治生物区域。地区，Shiyanhe Creaination Fauna与中国西部塔里木地区的当代动物群和来自华北平台的西南边缘相对相似。然而，动物组合物也表现出对北美中央城镇的密切亲和力，与北美的相关性很清楚。 Conodont Fauna由犹太话， belodina ， drepanoistodus ， Oulodus ， Perteals ， phragmodus ，“ proptodina

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