| details |
Early Eifelian |
|
USSR(Bashkir ASSR) |
Chibrikova,E.V. et al. Correlation and age of the lower horizons of the Devonian of the Western Slopes of the Southern Urals, Priuralia and the Kuznetskii Coal Basin according to plant microfossils. |
1971 |
| original |
Early Eifelian |
|
USSR(Urals) |
Chibrikova,E.V. Plant microfossils of the Southern Urals and Preurals (From Silurian and Devonian deposits). |
1972 |
| details |
Late Ordovician |
Early Eifelian |
USSR(Pre-Urals) |
Chibrikova,E.V. Stratigraphy of Devonian and older Paleozoic deposits of the Southern Urals and the Pre-Urals (According to plant Microfssils). |
1977 |
| details |
Late Ordovician |
Early Eifelian |
USSR(Urals) |
Chibrikova,E.V. Stratigraphy of Devonian and older Paleozoic deposits of the Southern Urals and the Pre-Urals (According to plant Microfssils). |
1977 |
| details |
Frasnian |
Famennian |
Czechoslovakia |
SnopkovŠ,P. et al. Devonian (Givetian-Frasnian) found by Drill Hole FV-1, (Blhovce). |
1979 |
| details |
Early Eifelian |
|
USSR(Urals) |
Batanova,G.P. et al. Paleontological basis and correlation of the Eifelian Stage of the Volgograd-Volgo Region. (In: The Present-Day Importance of Paleontology to Stratigraphy.) |
1982 |
| details |
Late Gothlandian |
Early Devonian |
Czechoslovakia |
Parsikova,M. et al. Palynological evaluation of samples from Hrelikov Potok and Kotlinee localities, Lower Paleozoic of the Gemeric Unit. |
1983 |
| details |
Ordovician |
Silurian |
USSR(Vologda) |
Nazarenko,A.M. et al. Stratigraphic subdivision of Pre-Upper Eifelian deposits of the Volga Region near Volgograd based on palynologic data |
1984 |
| details |
Middle Cambrian |
Late Cambrian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |