| details |
Tournaisian |
Visean |
England |
Butterworth,M.A. et al. Lower Carboniferous spores from North-West England |
1967 |
| details |
Gedinnian |
Givetian |
Spitsbergen |
Allen,K.C. Spore assemblages and their stratigraphical application in the Lower and Middle Devonian of North and Central Vestspitbergen |
1967 |
| details |
Gedinnian |
Givetian |
Spitsbergen |
Allen,K.C. Lower and Middle Devonian spores of North and Central Vestspitsbergen |
1965 |
| details |
Devonian |
|
USSR(Nenets Nat.Okrug) |
Allen,K.C. Lower and Middle Devonian spores of North and Central Vestspitsbergen |
1965 |