| details |
Early Oligocene |
Middle Oligocene |
Oklahoma |
SnopkovЎ,P. et al. Microplankton from Paleogene sedimentary rocks of West Carpathians |
1981 |
| details |
Late Eocene |
|
Czechoslovakia |
SnopkovЎ,P. et al. Pentagonium obidum nov. gen. et nov. sp. (incertae sedis) from the Upper Eocene of the west Carpathians (the PodunajskЎ Nzina Lowland). |
1982 |
| details |
Oligocene |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Egerian |
Karpathian |
Hungary |
Nagy,E. A comprehensive study of Neogene sporomorphs in Hungary |
1992 |