| details |
Early Famennian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Famennian |
|
USSR(European) |
Sergeyeva,L.A. et al. Upper Devonian microphytofossils of the Dnepr-Donets Depression |
1979 |
| details |
Late Frasnian |
Early Carboniferous |
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 |
Late Famennian |
|
USSR(Ukrainian SSR) |
Sergeyeva,L.A. et al. Micropaleophytological characterization of Devonian deposits from the Dnieper-Donets Basin. |
1974 |
| original |
Early Famennian |
|
USSR(Urals) |
Chibrikova,E.V. Plant microfossils of the Southern Urals and Preurals (From Silurian and Devonian deposits). |
1972 |