| details |
Late Givetian |
Early Frasnian |
Argentina(Salta) |
Ottone,E.G. Devonian palynomorphs from the Los Monos Formation, Tarija Basin, Argentina |
1996 |
| details |
Early Frasnian |
|
Brazil(Para) |
Grahn,Y. et al. Chitinozoan biostratigraphy of the Late Devonian formations in well Caima PH-2, TapajŠ³s River area, Amazonas Basin, northern Brazil |
2002 |
| details |
Late Frasnian |
|
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Late Frasnian |
|
Paraguay |
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Frasnian |
Early Famennian |
Brazil(Amazonas) |
Grahn,Y. Devonian chitinozoan biozones of Western Gondwana. |
2005 |