| original |
Givetian |
|
USSR(Bashkir ASSR) |
Chibrikova,E.V. Spores of the Devonian terrigenous deposits of Western Bashkiria and the Western Slopes of the Southern Urals |
1962 |
| details |
Eifelian |
|
USSR(Russian Platform) |
Araslanova,R.M. New data on the correlation of the lower horizons of the Middle Devonian in eastern and central regions of the Russian Platform. (In: Scientific Substantiation Trends Methods Prospecting Exploration Petroleum Natural Gas within Kama Region Perm. S.A.Shivkov, editor) |
1971 |
| details |
Devonian |
|
USSR(Yakut ASSR) |
Pashkevich,N.G. Coding of morphological characteristics of miospores of Devonian vegetation. |
1975 |