| details |
Cenomanian |
|
Canada(Alberta) |
Singh,C. Cenomanian microfloras of the Peace River area Northwestern Alberta |
1983 |
| details |
Aptian |
|
Canada(Alberta) |
Singh,C. Microflora of the Lower Cretaceous Mannville Group, east-central Alberta. |
1964 |
| details |
Middle Albian |
|
Canada(Alberta) |
Singh,C. Lower Cretaceous microfloras of the Peace River area, Northwestern Alberta. |
1971 |
| details |
Campanian |
Maastrichtian |
Canada(Alberta) |
Gunther,P.R. et al. Megaspores and other palynomorphs of the Brazeau Formation (Upper Cretaceous) Nordegg area, Alberta, Canada. |
1972 |
| details |
Early Aptian |
|
Argentina(Santa Cruz) |
Taylor,W.A. et al. Ulstrastructural analysis of selected Cretaceous megaspores from Argentina |
1988 |
| details |
Early Aptian |
|
Argentina(Santa Cruz) |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |
| details |
Barremian |
Aptian |
Argentina(Patagonia) |
Archangelsky,S. et al. Morphology and structure of megaspores from the Cretaceous of Patagonia, Republic of Argentina. |
1990 |