| details |
Early Aptian |
|
Spain |
Boulouard,C. et al. New data on the Upper Aptian and Albian in the Lower Aragon and Meastrazgo, (Spain). |
1970 |
| details |
Albian |
|
Oklahoma |
Hedlund,R.W. et al. Spores and pollen grains from Fredericksburgian, (Albian), Strata, Marshall County, Oklahoma. |
1968 |
| details |
Middle Albian |
Late Albian |
Canada(Alberta) |
Norris,G. Spores and pollen from the Lower Colorado (Albian-?Cenomanian) of Central Alberta. |
1967 |
| details |
Middle Albian |
Early Cenomanian |
Colorado |
Pannella,G. Palynology of the Dakota Group and Graneros Shale of the Denver Basin. |
1966 |
| details |
Middle Albian |
Early Cenomanian |
Nebraska |
Pannella,G. Palynology of the Dakota Group and Graneros Shale of the Denver Basin. |
1966 |
| details |
Late Turonian |
Early Campanian |
Pennsylvania |
Tschudy,R.H. An Upper Cretaceous deposit in the Appalachian Mountains. |
1965 |
| original |
Early Cretaceous |
|
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1963 |
| original |
Albian |
|
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1962 |