| details |
Aptian |
|
Canada(Alberta) |
Singh,C. Microflora of the Lower Cretaceous Mannville Group, east-central Alberta. |
1964 |
| details |
Albian |
|
Canada(Alberta) |
Vagvolgyi,A.B. Palynology of type McMurray Formation. |
1964 |
| details |
Wealden |
|
Belgium |
Delcourt,A.F. et al. Revision of some Lower Cretaceous microspores from Belgium. |
1963 |
| details |
Neocomian |
|
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 |
Wealden |
|
Belgium |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| original |
Wealden |
|
Belgium |
Delcourt,A.F. et al. Spores and pollen of the Wealdian of Hainaut. |
1955 |