| details |
Llanvirnian |
Llandeilian |
USSR(Orenburg) |
Chibrikova,E.V. The Ordovician of the southeast Russian Platform. (In: Stratigrafiya i Paleontologiya Dokembriya i Paleozoya Yuzhnogo Urala i Pri-Ural'ya. N.D.Trapeznikova, editor) |
1972 |
| original |
Silurian |
Middle Devonian |
USSR(Urals) |
Chibrikova,E.V. Plant microfossils of the Southern Urals and Preurals (From Silurian and Devonian deposits). |
1972 |
| details |
Silurian |
Early Devonian |
USSR(Permsk Oblast) |
Lagutenkova,N.S. et al. New data on Old rocks in the Yaborovskaya area in the northeastern part of the Perm Oblast |
1977 |
| details |
Silurian |
|
USSR(Urals) |
Lagutenkova,N.S. et al. Separation of Lower Paleozoic deposits in the northeastern Perm District. (In: Voprosy biostratigrafii i Paleogeografii Neftegazonosnykh Oblastei SSSR.) |
1977 |
| details |
Vendian |
|
USSR(Permsk Oblast) |
Lagutenkova,N.S. et al. Separation of Lower Paleozoic deposits in the northeastern Perm District. (In: Voprosy biostratigrafii i Paleogeografii Neftegazonosnykh Oblastei SSSR.) |
1977 |
| details |
Ordovician |
|
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 |
Silurian |
Early Devonian |
USSR(Bashkir ASSR) |
Chibrikova,E.V. Stratigraphy of Devonian and older Paleozoic deposits of the Southern Urals and the Pre-Urals (According to plant Microfssils). |
1977 |
| details |
Ordovician |
Silurian |
USSR(Bashkir ASSR) |
Chibrikova,E.V. Stratigraphy of Devonian and older Paleozoic deposits of the Southern Urals and the Pre-Urals (According to plant Microfssils). |
1977 |
| details |
Gedinnian |
|
USSR(Ukrainian SSR) |
Burova,M.I. Lower Devonian microphytofossil assemblages of the Lvov Paleozoic Depression. |
1978 |
| 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 Devonian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |