Some Important Graptolite Faunas of the Middle and Upper Ordovician from Chongyi and Yongxin Areas, Jiangxi

1. Preface
2. Description of Strata
(1) Upper Ordovician Section extending from Hanjiang to Shikou village Yongxin county
(2) Middle and Upper Ordovician Section exposed at Duiershi village, Sishum area, Chongyi county
(3) Middle Ordovician Section exposed at Chnggouwan, Sishun area, Chongyi county
3. Stablishment of graptolite zones, and the features and correlation of its associations
4. Discussion of some questions
(1) The question with regard to the Genus Jiangxigraplus should be erected or not
(2) The question with regard to the Genus Rectograptus Should be indpendence or not
(3) Discussing the boundary of Lower and Middle Ordovician from the stage of evolution and development of graptolite faunas
5. Systematic description of species
6. References
7. English Summary
Explanations to plates and Plates