Stratigraphic scale of the ICS subdivisions and Precambrian/Cambrian boundary.
The Jiangshanian is the middle stage of the Furongian series. It follows the Paibian stage and is succeeded by the still unnamed Stage 10 of the Cambrian. The base is defined as the first appearance of the trilobiteAgnostotes orientalis which is estimated to be ~494 million years ago. The Jiangshanian lasted until approximately ~489.5 million years ago.