North China-type Carbonaceous-Permian chronostratigraphic divisions in Anhui Province

According to the latest Stratigraphic Guide of China and Its Instructions,and Instructions for Regional Chronostratigraphic Timescale(Geological Time) of China,on the basis of regional biostratigraphic correlation,this paper collated and stipulated again the North China-type Carbonaceous-Permian chronostratigraphic system in Anhui Province,with two divisions for Carbonaceous and three divisions for Permian.Only the upper Carbonaceous was found to have deposited in the area,the Permian is complete,with the lower,middle and upper series all being developed.