| details |
Oligocene |
|
W.Germany(Hesse) |
Brosius,M. et al. The stratigraphic range of the Heskemer pollen-picture in Borken (Tertiary, Neiderhessen). |
1959 |
| details |
Middle Eocene |
|
W.Germany(Hesse) |
Krutzsch,W. Micropaleontologic (spore paleontology), investigation of the Brown Coal of the Geiseltal. |
1959 |
| details |
Pleistocene |
|
W.Germany(N.Rhine) |
Jux,U. et al. On the formation and chronology of the Rhine Brown Coal Basin. |
1958 |
| details |
Chattian |
Middle Miocene |
Yugoslavia |
Weyland,H. et al. Investigations of the spore and pollen floras of some Yugoslav and Greek Brown Coals |
1958 |
| details |
Pontian |
|
Greece |
Weyland,H. et al. Investigations of the spore and pollen floras of some Yugoslav and Greek Brown Coals |
1958 |
| details |
Senonian |
|
W.Germany(N.Rhine) |
Pflug,H.D. Composition and development of the Lower Rhine Basin in the U.Cretaceous and in the Lower Tertiary based on spore-Paaeontological Dating. |
1958 |
| details |
Middle Oligocene |
|
W.Germany(N.Rhine) |
Helal,A.H. Age and distribution of the Tertiary Browncoal in the area of Gladbach east of Cologne. |
1958 |
| details |
Late Eocene |
|
W.Germany(Hesse) |
Pflug,H.D. On the age succession and facies correlation of Middle European, (in particular Hessen) Brown Coal. |
1957 |
| original |
Middle Oligocene |
Middle Miocene |
W.Germany(Hesse) |
Thomson,P.W. et al. Pollen and spores of the Middle European Tertiary. |
1953 |