| original |
Albian |
|
Canada(Alberta) |
Brideaux,W.W. Recurrent species Groupings in fossil Micro-Plankton assemblages |
1971 |
| original |
Nd |
|
Nd |
Habib,D. Dinoflagellate stratigraphy Leg 11, Deep Sea Drilling Project. |
1972 |
| original |
Late Ryazanian |
|
North Sea |
Crittenden,S. et al. The Early - Middle Cretaceous lithostratigraphy of the Central North Sea, (United Kingdom Sector). |
1991 |
| original |
Barremian |
|
Barents Sea |
Smelror,M. et al. The Klippfisk Formation: A new lithostratigraphic unit of Lower Cretaceous platform carbonates on the western Barents Shelf. |
1998 |
| original |
|
|
India(Madras) |
Mehrotra,N.C. et al. Cauvery Basin. (In: Palynology in Hydrocarbon Exploration : The Indian Scenario Part I: Category I : Basins) |
2002 |