| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| details |
Middle Oligocene |
|
Germany |
Norris,G. et al. A descriptive index of genera of fossil Dinophyceae and acritarcha. |
1965 |
| details |
Late Oligocene |
|
W.Germany(Hesse) |
Brosius,M. Plankton of the Kassel, North Hessen, marine Sand (Upper Oligocene). |
1963 |
| original |
Middle Oligocene |
|
Germany |
Gocht,H. Genus Chiropteridium n.gen. (Hystrichosphaeridea) in the German Oligocene. |
1960 |
| details |
Nd |
|
Nd |
Gocht,H. Genus Chiropteridium n.gen. (Hystrichosphaeridea) in the German Oligocene. |
1960 |