original |
Late Senonian |
Danian |
Germany |
Wetzel,O. Microfossils preserved in organic substances of the Baltic Cretaceous Flint. (Part 2.) |
1933 |
original |
Late Senonian |
Danian |
Sweden |
Wetzel,O. Microfossils preserved in organic substances of the Baltic Cretaceous Flint. (Part 2.) |
1933 |
original |
Middle Oligocene |
Late Oligocene |
W.Germany(N.Rhine) |
Benedek,P.N. Phytoplanktons from the Middle and Upper Oligocene of Tonisberg, (Lower Rhine area). |
1972 |
original |
Early Cambrian |
|
USSR(Baltic) |
Yankauskas,T.V. et al. New Cambrian acritarchs from the East Baltic Region. |
1976 |
original |
Late Senonian |
Danian |
Germany |
Wetzel,O. Microfossils preserved in organic substances of the Baltic Cretaceous Flint. (Part 2.) |
1933 |