| details |
Late Devonian |
|
USSR(Ukrainian SSR) |
Sergeyeva,L.A. et al. Establishment of the age of the Paleozoic Salts in the South-Eastern Part of the Dnieper-Donets Depression according to the spore-pollen analysis. |
1964 |
| original |
Famennian |
|
USSR(Russian Platform) |
Naumova,S.N. Spore-pollen complexes of the Upper Devonian of the Russian Platform and their significance for stratigraphy |
1953 |
| details |
Famennian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |