Base of Guzhangian Stratotype Point Base of Guzhangian Ratified 2008 Agnostoid arthropod FAD Lejopyge laevigata Louyixi, Guzhang County, NW Hunan Province, S. China Episodes 32/1, p.41-55, 2009 Location of Stratotype Point Base of Guzhangian Stratotype Point Base of Guzhangian true 121.3 m above the Base of the Huaqiao Formation