original |
Late Ordovician |
Early Gothlandian |
Canada(Anticosti Island) |
Achab,A. Biostratigraphy of the chitinozoa of Upper Ordovician - Lower Silurian of Anticosti Island. Preliminary results. |
1981 |
original |
Llandoverian |
|
China(Hupei) |
Geng,L.-Y. Lower Silurian chitinozoans from Bayu of Daozhen, Guizhou and Dazhongba of Yichang, Hubei. |
1986 |
original |
Llandoverian |
|
China(Kweichow) |
Geng,L.-Y. Lower Silurian chitinozoans from Bayu of Daozhen, Guizhou and Dazhongba of Yichang, Hubei. |
1986 |
original |
Aeronian |
|
China(Hupei) |
Geng,L.-Y. et al. Rhuddanian and Aeronian chitinozoans from Dazhongba of Yichang, Western Hubei. |
1995 |
original |
Nd |
|
Nd |
Soufiane,A. et al. Chitinozoan zonation of the Late Ordovician and the Early Silurian of the island of Anticosti, Quebec, Canada. |
2000 |
original |
Nd |
|
Nd |
Soufiane,A. et al. Chitinozoan zonation of the Late Ordovician and the Early Silurian of the island of Anticosti, Quebec, Canada. |
2000 |
original |
Ordovician |
|
China(Kiangsu) |
Geng,L.-Y. et al. Chitinozoan biostratigraphy in China. |
2000 |