| details |
Miocene |
|
W.Germany(N.Rhine) |
Potonie,R. et al. Microbotany of Miocene Brown Coal from the Niederrheinische Bucht |
1934 |
| details |
Miocene |
|
W.Germany(N.Rhine) |
Potonie,R. et al. Microbotany of Miocene Brown Coal from the Niederrheinische Bucht |
1934 |
| details |
Miocene |
|
W.Germany(N.Rhine) |
Potonie,R. et al. Microbotany of Miocene Brown Coal from the Niederrheinische Bucht |
1934 |
| details |
Eocene |
Eocene |
W.Germany(Hesse) |
Potonie,R. The microbotany of the Eocene Brown Coal of the Geiseltal. |
1934 |
| original |
Miocene |
|
W.Germany(Rhineland) |
Potonie,R. Pollen forms of the Miocene Brown Coal. |
1931 |
| original |
Eocene |
|
Germany |
Potonie,R. The microscopic research of Brown Coals.Tertiary pollen forms. |
1931 |
| original |
Miocene |
|
E.Germany(Cottbus) |
Potonie,R. The microscopic research of Brown Coals.Tertiary pollen forms. |
1931 |
| original |
Miocene |
|
E.Germany(Cottbus) |
Potonie,R. The microscopic research of Brown Coals.Tertiary pollen forms. |
1931 |
| original |
Miocene |
|
E.Germany(Cottbus) |
Potonie,R. The microscopic research of Brown Coals.Tertiary pollen forms. |
1931 |
| original |
Miocene |
|
E.Germany(Cottbus) |
Potonie,R. The microscopic research of Brown Coals.Tertiary pollen forms. |
1931 |
| original |
Miocene |
|
E.Germany |
Potonie,R. Pollenforms from the Tertiary Brown Coals. |
1931 |