| details |
Middle Frasnian |
|
USSR(Bashkir ASSR) |
Chibrikova,E.V. Spores from Devonian and older deposits of Bashkir |
1959 |
| original |
Tournaisian |
|
USSR(Kalinin) |
Yushko,L.A. New species of microspores from Cherepetsk deposit of the Tournaisian Stage from the Moscow Basin. (In: Data on geology and useful minerals of the central regions of the European part of the USSR.) |
1960 |
| details |
Carboniferous |
|
USSR(Yakut ASSR) |
Prokopchuk,B.I. et al. Discovery of remnants of Carboniferous sediments in the Anabar River Basin, Western Yakutia |
1970 |
| details |
Tournaisian |
|
USSR(Kalinin) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |