| details |
Middle Frasnian |
|
USSR(Komi ASSR) |
Arkhangelskaya,A.D. New spore taxa from the Frasnian of the European USSR |
1988 |
| original |
Frasnian |
|
USSR(Tatar ASSR) |
Arkhangelskaya,A.D. New spore taxa from the Frasnian of the European USSR |
1988 |
| details |
Middle Frasnian |
|
USSR(Russian Platform) |
Avkhimovich,V.I. et al. Middle and Upper Devonian miospore zonation of eastern Europe. |
1993 |
| details |
Middle Frasnian |
|
Russia(Komi) |
Becker,R.T. et al. A potential Middle Frasnian stratotype section at Chut River (Southern Timan, Russia). |
2001 |