| original |
Early Visean |
|
USSR(Belorussian SSR) |
Kedo,G.I. Spores of the Lower Carboniferous of the Pripyat Trough, (Yasmopolyanskii Substage). (In: Paleontology and Stratigraphy of the BSSR) |
1966 |
| details |
Early Serpukhovian |
|
USSR(Kaluga) |
Loginova,A.M. Paleopalynology of the Steshevo Bed |
1975 |
| details |
Aptian |
|
USSR(Yakut ASSR) |
Pokrovskaya,I.M. Lower Cretaceous spore-pollen complexes Anabar-Kha Tanga interfluv, Khatanga and Pre-Verkhoyansk Synec Lises and Vilyuy Depression. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |
| details |
Early Visean |
|
USSR(Urals) |
Ananiev,A.R. et al. Stratigraphy of the Coal-bearing Lower Carboniferous of the eastern Slope of the Urals. (In: Paleontological Characteristics of the Main Subdivisions of the Carboniferous.) |
1979 |
| details |
Early Devonian |
|
USSR(Latvian SSR) |
Kedo,G.I. Lower Devonian plant microfossils of the Western East-European Platform |
1978 |
| details |
Ladinian |
|
USSR(Siberia) |
Dagis,A.S. et al. Stratigraphy of the Ladinian Stage of North Central Siberia. (In: The Palaeontology and Stratigraphy of the Middle Triassic of Siberia) |
1980 |