| details |
Late Frasnian |
|
France(Pas-de-Calais) |
Taugourdeau-Lantz,J. Spores from the Frasnian of an authorized region, the Boulonnais. |
1971 |
| details |
Frasnian |
|
USSR(Russian Platform) |
Taugourdeau-Lantz,J. Spores from the Frasnian of an authorized region, the Boulonnais. |
1971 |
| details |
Middle Frasnian |
Late Frasnian |
USSR(Russian Platform) |
Avkhimovich,V.I. et al. Middle and Upper Devonian miospore zonation of eastern Europe. |
1993 |
| details |
Middle Frasnian |
|
USSR(Russian Platform) |
Avkhimovich,V.I. et al. Middle and Upper Devonian miospore zonation of eastern Europe. |
1993 |
| details |
Frasnian |
Famennian |
USSR(Belorussian SSR) |
Obukhovskaya,T.G. Zonal differentiation of the Frasnian-Famennian boundary deposits in Belarus by plant spores |
1993 |