| original |
Givetian |
|
USSR(Turkmen SSR) |
Arkhangelskaya,A.D. Spores from the Lower and Middle Devonian deposits of the Russian Platform. (In: Atlas of Spores and Pollen of Oil and Gas Bearing Deposits of the Russian and Turonskoi Platform. V.V.Menner and T.V.Byvsheva, editors) |
1985 |
| details |
Late Emsian |
Eifelian |
USSR(Russian Platform) |
Arkhangelskaya,A.D. et al. Correlation of the Lower Middle Devonian Elenisporis biformis spore Subzone in Arctic Canada and the USSR. |
1990 |
| details |
Nd |
|
Nd |
Pashkevich,N.G. Morphological classification of dispersed fossil spores. (In: Practical Palynostratigraphy. L.A. Panova et al, editors) |
1990 |