This paper divides the Telychian into 7 graptolite zones, 12 subzones and 4 chitinoans in the Ziyang region, China. The ......

Correlative study of the Ordovician chitinozoan biostratigraphy in China with graptolite and conodont biozones, and comp......

系统介绍湖北宜昌陈家河剖面下奥陶统分乡组和红花园组的几丁虫分布发育特征，将分乡组和红花园组的几丁虫自下而上划分为Lagenochit......