| details |
Early Givetian |
|
Paraguay |
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Early Givetian |
|
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Early Devonian |
|
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Early Givetian |
|
Brazil(Amazonas) |
Grahn,Y. et al. Integrated correlation of Late Silurian (Prdol s.l.) - Devonian chitinozoans and miospores in the Solimеes Basin, northern Brazil. |
2003 |
| details |
Late Eifelian |
Late Givetian |
Brazil(Paraiba) |
Grahn,Y. Devonian chitinozoan biozones of Western Gondwana. |
2005 |