Abstract.  Two Permian ammonoid specimens belonging to the genus Kufengoceras are described from the
topmost bed of the Laibin Limestone, Guangxi, South China.  The ammonoid horizon is just above the Glob-
 al Stratotype Section and Point for the Guadalupian/Lopingian Boundary.  Kufengoceras is a typical Middle
Permian ammonoid, and its occurrence above the GSSP supports the previous opinion that the ammonoid
faunal changeover took place slightly after the beginning of the Lopingian.