The Karatag section hence is one of the possible candidates of the global stratotype of the Tournaisian-Viséan boundary.
因此，喀拉塔克剖面有可能成为全球杜内-韦宪阶界线的一个候选层型剖面。
2
Late Tournaisian conodonts from the Jiehejie Formation in the Qinling Mountains, situated between the North China Platform and South China Platform are first described and illustrated in this paper.