| details |
Late Eocene |
Rupelian |
Belgium |
De Coninck,J. Organic-walled phytoplankton biostratigraphy of the Eocene - Oligocene transition in the Kallo Borehole and the Rupelian stratotype area (northwestern Belgium). |
1999 |
| details |
Early Valanginian |
|
North Sea |
Duxbury,S. A palynological zonation scheme for the Lower Cretaceous: United Kingdom Sector, Central North Sea. |
2001 |
| details |
Early Valanginian |
|
Czech Republic |
BoorovŠ,D. et al. Biostratigraphy of the Lower Cretaceous limestones of the Godula facies of the Silesian Unit, Outer Western Carpathians |
2004 |