| original |
Bathonian |
|
North Sea |
Bailey,D.A. et al. Some Middle Jurassic dinocyst from the Brent Group of the northern North Sea. |
1991 |
| details |
Early Bathonian |
Middle Bathonian |
North Sea |
Mussard,J.M. et al. Statistical analysis of palynomorph assemblages in Middle Jurassic deposits (Lower to Middle Bathonian, Brent Group, Norway) |
1997 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Middle Jurassic |
|
North Sea |
Feist-Burkhardt,S. et al. Gonyaulacacean dinoflagellate cysts with multi-plate precingular archaeopyle. |
2001 |