| original |
Valanginian |
Hauterivian |
Canada(W.Canada) |
Pocock,S.A.J. Microfloral analysis and age determination of strata at the Jurassic-Cretaceous boundary in the Western Canada Plains |
1962 |
| details |
Albian |
|
Canada(Alberta) |
Vagvolgyi,A.B. Palynology of type McMurray Formation. |
1964 |
| details |
Early Albian |
Middle Albian |
Canada(Alberta) |
Vagvolgyi,A.B. et al. Microflora of the Lower Cretaceous McMurray Formation, Northeast Alberta. |
1969 |
| details |
Early Cretaceous |
|
Oklahoma |
Wingate,F.H. Palynology of the Denton Shale (Lower Cretaceous), of southeastern Oklahoma. |
1974 |
| details |
Early Cretaceous |
|
Oklahoma |
Wingate,F.H. Palynology of the Denton Shale (Lower Cretaceous), of southeastern Oklahoma. |
1974 |
| details |
Albian |
|
Sweden |
Guy-Ohlson,D. Albian biostratigraphy of Sixtorp Bore #1, northeast Scania, Sweden. |
1984 |
| details |
Valanginian |
Hauterivian |
Canada(W.Canada) |
Davies,E.H. The Anemiacean, Schizaeacean and related spores. An index to genera and species. |
1985 |