| original |
Early Oligocene |
|
Poland |
Eisenack,A. Microfossils from the Lower Oligocene phosphorites of Samland and concerning the uniformity of Hystrichospheres. |
1954 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Early Oligocene |
|
Germany |
Norris,G. et al. A descriptive index of genera of fossil Dinophyceae and acritarcha. |
1965 |
| details |
Early Eocene |
|
W.Germany(Rhineland) |
Morgenroth,P. Lower Eocene microfossils and Concretions of Northwest Germany |
1966 |
| details |
Ypresian |
Lutetian |
W.Germany(Niedersachsen) |
Heilmann-Clausen,C. et al. Dinoflagellate zonation of the Uppermost Paleocene? to Lower Miocene in the Wursterheide research well, northwest Germany |
1989 |
| details |
Early Oligocene |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |