| details |
Late Portlandian |
|
Celtic Sea |
Ainsworth,N.R. et al. Jurassic and Upper Triassic biostratigraphy of the North Celtic Sea and Fastnet Basins. (In:Northwest European Micropalaeontology and Palynology.D.J. Batten and M.C. Keen, editors) |
1989 |
| 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 |