| details |
Early Frasnian |
Middle Frasnian |
USSR(European) |
Raskatova,L.G. Middle and Upper Devonian spore-pollen complexes of the southeastern part of the Central Devonian Field. |
1969 |
| details |
Nd |
|
Nd |
Williams,D.B. et al. Organic-walled microfossils as depth and shoreline indicators. |
1967 |
| details |
Maastrichtian |
|
Belgium |
Vanguestaine,M. Quantitative palynological analysis of two Upper Cretaceous Profiles in the Meuse Valley. |
1966 |
| details |
Late Ordovician |
|
Canada(Quebec) |
Staplin,F.L. et al. Evaluation of some acritarchous Hystrichosphere genera. |
1965 |
| details |
Famennian |
|
Belgium |
Streel,M. Study of Devonian Palymorphs from Drilling of Booischot, (Belgium). |
1964 |