Abstract: Some new material of Polybranchiaspiformes and Acanthodii was collected from Fentou Formation of Anhui and Jiangsu provinces. Based on the study of agnathans — gnathostomes including Hanyangaspis and Sinacanthus and so on, the Fentou Formation is considered as Llandovery in age. This view has been proved also by the newly discovered invertebrate fossils. Maoshan Formation was correlated with the upper part of Xiushan Formation in the past. Recently, the Xiushan Formation and Xiaoxiyu Formaüon was put in to the Lower Silurian by invertebrate workers. Because the Maoshan and Fentou formaüons are usually condnuous and conformably contacted, the Fentou Formaüon may correspond to Llandovery and Maoshan Formation to Wenlock.

摘要： 根据新发现的鱼化石和已记述的鱼类化石、无脊椎动物化石和沉积旋回，讨论了长江下游含鱼化石地层坟头组和茅山组(群)的时代，认为它们分别为早志留世的兰多维里阶和温洛克阶。