| original |
Givetian |
|
Algeria |
Boumendjel,K. New species of Devonian and Silurian chitinozoans of the Illizi Basin, (southeast of the Algerian Sahara). |
1985 |
| details |
Early Givetian |
|
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 |
Nd |
|
Nd |
Paris,F. Chitinozoan biostratigraphy and palaeoecology. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Middle Givetian |
Late Givetian |
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Middle Givetian |
Late Givetian |
Paraguay |
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Givetian |
|
|
Grahn,Y. Devonian chitinozoan biozones of Western Gondwana. |
2005 |