| original |
Late Famennian |
|
USSR(Urals) |
Chibrikova,E.V. Plant microfossils of the Southern Urals and Preurals (From Silurian and Devonian deposits). |
1972 |
| details |
Devonian |
|
Romania |
Gherasi,N. et al. On the Paleozoic age, (Devonian) of the Vidra Formation situated in the northern part of the Tarcu Mountains, (South Carpathians). |
1975 |
| 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 |
Devonian |
|
Romania |
Givulescu,R. Fossil flora of Romania. (3rd Supplement) |
1978 |
| details |
Late Famennian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |