| original |
Givetian |
Early Frasnian |
USSR(Tatar ASSR) |
Pykhova,N.G. An attempt of a detailed correlation of the terrigenous, productive deposits of the Pashii Formation by means of a spore-pollen analysis, as was previously done with some oil-bearing areas in Setatar SSSR |
1960 |
| original |
Givetian |
Early Frasnian |
USSR(Tatar ASSR) |
Pykhova,N.G. An attempt of a detailed correlation of the terrigenous, productive deposits of the Pashii Formation by means of a spore-pollen analysis, as was previously done with some oil-bearing areas in Setatar SSSR |
1960 |
| original |
Givetian |
Early Frasnian |
USSR(Tatar ASSR) |
Pykhova,N.G. An attempt of a detailed correlation of the terrigenous, productive deposits of the Pashii Formation by means of a spore-pollen analysis, as was previously done with some oil-bearing areas in Setatar SSSR |
1960 |
| original |
Frasnian |
|
USSR(Russian Platform) |
Naumova,S.N. Spore-pollen complexes of the Upper Devonian of the Russian Platform and their significance for stratigraphy |
1953 |