| 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 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Santonian |
|
Canada(Alberta) |
Schroder-Adams,C.J. et al. An integrated paleontological approach to resevoir problems: Upper Cretaceous Medicine Hat Formation and first White Speckled Shale in southern Alberta Canada. |
1998 |