| details |
Late Valanginian |
Hauterivian |
|
Aguirre-Urreta,M.B. et al. Advances in the biostratigraphy of the Agrio Formation (Lower Cretaceous) of the Neuqu©n Basin, Argentina: ammonites, palynomorphs and calcareous nannofossils. |
1999 |
| details |
Callovian |
Ryazanian |
North Sea |
Abbink,O.A. et al. A Sporomorph Ecogroup model and its application to an example from the Northwest European Upper Jurassic. (In: Palynological Investigation in the Jurassic of the North Sea Region. O.A. Abbink) |
1998 |
| details |
Jurassic |
|
North Sea |
Abbink,O.A. Taxonomic Section. (In: Palynological Investigation in the Jurassic of the North Sea Region. O.A. Abbink) |
1998 |