| details |
Early Devonian |
Middle Devonian |
Nd |
Taugourdeau,P. The chitinozoa. |
1979 |
| details |
Givetian |
|
Bolivia |
Racheboeuf,P.R. et al. The Devonian of Bolivia; biostratigraphy and chronostratigraphy. |
1993 |
| details |
Late Rhuddanian |
|
Sweden(Gotland) |
Grahn,Y. Lower Silurian chitinozoa and biostratigraphy of subsurface Gotland. |
1995 |
| details |
Early Lochkovian |
|
USSR(Ukrainian SSR) |
Paris,F. et al. Chitinozoa of the Silurian-Devonian boundary sections in Podolia, Ukraine |
1996 |
| details |
Early Frasnian |
|
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
| details |
Early Frasnian |
|
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. Devonian chitinozoan biozones of Western Gondwana. |
2005 |