Cisuralian–Guadalupian conodont sequence from the Shaiwa section, Ziyun, Guizhou, South China

Abstract

A sequence of successive conodont datums and zones for the Cisuralian and Guadalupian series for the South China region of the Equatorial Warm Water Province is proposed based on the Shaiwa section, Ziyun, Guizhou. The seven conodont zones in ascending order are: Sweetognathus aff. whitei Zone of Artinskian Stage, a set of three new Kungurian zones of Sweetognathus guizhouensis Zone, Sweetognathus subsymmetricus Zone, Mesogondolella nashuiensis Zone; the Mesogondolella idahoensis lamberti Zone of uppermost Kungurian, the Guadalupian zones of Jinogondolella aserrata followed by Jinogondolella postserrata. The base of the Kungurian Stage is tentatively defined by the first occurrence of S. guizhouensis, 174.5m above the base of the Sidazhai Formation. This suite of conodont datums and zones will help to improve the global correlations of Permian strata of the Kungurian Stage.