| original |
Coblenzian |
|
W.Germany(Rhineland) |
Thomson,P.W. Contribution to the knowledge of the sporomorpha flora in the Lower and Middle Devonian |
1951 |
| details |
Devonian |
|
USSR(Belorussian SSR) |
Obrhel,J. On the occurrance of spores and pollen (sporae dispersae) in Lower Paleozoic and Pre-Paleozoic formations |
1958 |
| details |
Siegenian |
Emsian |
W.Germany(Rhineland) |
Streel,M. Palaeobotanic information on the Lower-Middle Devonian boundary in the Ardenno-Rhenean Geosyncline. |
1965 |
| details |
Early Devonian |
|
Belgium |
Streel,M. Paleobotanic information on the boundary of the Lower Devonian and Middle Devonian in the Ardenno-Rhenan Geosyncline. |
1967 |
| details |
Early Devonian |
|
Poland |
Jakubowska,L. Palaeobotanic-stratigraphical studies on Devonian deposits pierced by Bore Holes Ciepielow and Dorohucza. |
1968 |
| details |
Devonian |
|
Poland |
Jakubowska,L. Flora of the Devonian;Microflora |
1972 |