The Telychian Zonal Graptolites from Ziyang, China
中国紫阳特列奇阶的分带笔石及其层位分布

The Telychian zonal graptolites of 9 biozones and 5 subzones in the successive Baojiaokou sections of Ziyang together with their appearing horizons are presented in this paper. The 9 Telychian graptolite biozones and 5 subzones set up by Loydell (1992, 1996) in Britain are applicable to other places of the world such as Ziyang of China.