original |
Wenlockian |
Pridolian |
Spain |
Schweineberg,J. Silurian chitinozoa from the Palencia Province (Cantabrian Mountains, North Spain). |
1987 |
original |
Early Aeronian |
|
Paraguay |
Grahn,Y. et al. Silurian and Lower Devonian chitinoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2000 |
original |
Late Llandoverian |
|
Brazil(Paraiba) |
Le H©riss©,A. et al. Palynological characterization and dating of the TianguЎ Formation, Serra Grande Group, Northern Brazil. (In: Correla§ўo de SeqмЄncias Paleozгicas Sul-Americanas (J.H.G.Melo and G.J.S.Terra, editors. 25 CiЄncia-T©cnica-Petrгleo.) |
2001 |
details |
Homerian |
Early Gorstian |
Estonia |
Nestor,H. et al. Description of the Type Section,cyclicity, and correlation of the Riksu Formation (Wenlock, Estonia). |
2001 |
original |
Middle Givetian |
|
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
original |
Middle Givetian |
|
Paraguay |
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |