,Early Silurian(Telychian)rugose coral fauna of Daguan area, northeast Yunnan Province,China

• 作 者: CHEN Jianqiang HE Xinyi TANG Lan
• 机 构: Department of Geology and Mineral Resources,China University of Geosciences,Beijing 100083,China“,”G
• 出 处: 中国高等学校学术文摘·生物学
• 发表日期: 2006年3期
• 关键词: mgose coral fauna Telychian Silurian Daguan northeast Yunnan Province China

Study on rugose coral fauna of the Sifengya Formation(early Telyehian)and Daluzhai Formation (mid-late Telychian)in Daguan area,northeast Yunnan Province,China was carded out.Rugose coral fauna of the Sifengya Formation included 18 genera and 34 species,while Daluzhai Formation with nine genera,ten species.We described rugose coral fauna(12 genera,19 species)including one new genus and five new species,i.e.Protoketophyllum daguanense gen.et sp.nov..Crassilasma huanggexiense sp.nov.,Pseudophaulactis heae sp.nov.,P.convolutus sp.nov.,and Shensiphyllum minor sp.nov..The characteristics and geological significance of rugose coral fauna of Sifengya Formation and Daluzhai Formation were analyzed.Particularly,mgose coral fauna of the Sifengya Formation represent early Telychian rugosan fauna in the Upper Yangtze region and improve the sequences of early Silurian(Llandovery)mgose coral assemblages in Yangtze region.It is therefore very meaningful to further analyze radiation period of rugose coral fauna in such epoch.