| original |
Middle Devonian |
|
Canada(Ontario) |
McGregor,D.C. Spores and other plant microfossils from selected Devonian sedimentary Formations of Canada |
1957 |
| details |
Late Eifelian |
Early Givetian |
USSR(Baltic) |
Vaitekunene,G.K. Spore complexes of the Pyarnu and Narova horizons in the southern part of the Balticum. (In:-Palynological Researches in the Baltic Soviet Republics. T.D.Bartosh, editor) |
1971 |
| details |
Late Frasnian |
|
USSR(Nenets Nat.Okrug) |
Tszyu,Z.I. et al. Timan-Pechora Province. (In: Devonian Systems. D.V.Nalivkin et al, editors) |
1973 |
| details |
Famennian |
|
USSR(Urals) |
Arkhangelskaya,A.D. et al. Comparison of conodont and spore biozones in Famennian deposits in the Volga-Ural oil-Gas Province |
1986 |