cm 0cm 0pt" class=MsoNormal>The Liujia section in ce prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />ceName w:st="on">TongluceName> ceType w:st="on">CountyceType>, discovered in recent years, is located between the Majin-Wuzhen and Qiuchuan-Xiaoshan fault zones, and is one of the few Ordovician representative sections in ce w:st="on">Northwest Zhejiang Provincece>. The section includes in ascending order the Yinchufu, Ningguo, Hulo, Yanwashan, Huangnigang and Changwu formations, and is dominated by fine siliciclastics deposits. Based on the graptolites assemblage from the Ningkuo and Hulo formations,  eight graptolite zones are preliminarily recognized, these are, in ascending order, Tetragraptus approximates Zone, Corymbograptus deflexus Zone, Azygograptus suecicus Zone, Exigraptus clavus Zone, Undulograptus austrodentatus Zone, Acrograptus ellesae Zone, Dicellograptus vagus Zone and Nemagraptus gracilis Zone.