| original |
Albian |
Early Cenomanian |
Atlantic Ocean |
Habib,D. Middle Cretaceous palynomorph assemblages from clays near the Horizon Beta deep-sea outcrop. |
1970 |
| details |
Middle Cretaceous |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Early Maestrichtian |
|
Arctic Ocean |
Firth,J.V. et al. An Early Maestrichtian organic-walled phytoplankton cyst assemblage from an organic-rich Black Mud in core Fl-533, Alpha Ridge: Evidence for upwelling conditions in the Cretaceous Arctic Ocean |
1998 |