| details |
Late Devonian |
Early Mississippian |
Venezuela |
Stover,L.E. Palynological dating of the Carrizal Formation of eastern Venezuela |
1967 |
| details |
Middle Frasnian |
|
Belgium |
Dricot,E.M. Evolution and paleogeographic distribution of microplankton (Acritarchs) in the Frasnian of Belgium. |
1967 |
| details |
Early Cambrian |
Middle Cambrian |
Yugoslavia |
Pantic,N.K. et al. Microfloristic remains of Slates from the Vlasina River and their stratigraphic significance. |
1967 |
| details |
Llandoverian |
|
Belgium |
Martin,F. Acritarchs from the drilling at the Lust Brewery near Kortrijk (Courtrai) (Belgian Silurian). |
1966 |