| details |
Late Ludlovian |
|
Algeria |
Boumendjel,K. et al. Biostratigraphy of the miospores and chitinozoas of the Late Silurian and Devonian of the Illizi Basin, (southeast Algerian Sahara). |
1988 |
| details |
Late Sheinwoodian |
Late Gorstian |
Worldwide |
Paris,F. Chitinozoans. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| details |
Late Wenlockian |
Early Ludlovian |
Brazil(Amazonas) |
Grahn,Y. et al. Age and correlation of the Trombetas Group, Amazonas Basin, Brazil. |
1992 |
| details |
Late Sheinwoodian |
Early Gorstian |
Gondwanaland |
Paris,F. Chitinozoan biostratigraphy and palaeoecology. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Wenlockian |
|
Saudi Arabia |
Al-Hajri,S. et al. Age and palaeoenvironment of the Sharawra Member (Silurian of North-Western Saudi Arabia) |
1998 |