| original |
Eocene |
|
Germany |
Potonie,R. The microscopic research of Brown Coals.Tertiary pollen forms. |
1931 |
| details |
Early Tertiary |
|
China(Hupei) |
Anonymous Early Tertiary spores and pollen grains from the Coastal Region of Bohai. |
1978 |
| details |
Early Pliocene |
Middle Pliocene |
Poland |
Doktorowicz-Hrebnicka,J. Index pollen spectra of Pliocene Coal-bearing sediments. |
1956 |
| details |
Early Miocene |
|
Poland |
Doktorowicz-Hrebnicka,J. Microfloristic investigations of Brown Coal at Miroslawice Gorne in Lower Silesia. |
1956 |