| original |
Miocene |
|
Poland |
Kremp,G.O.W. Pollen analysis of the Miocene Brown Coal Bed of Konin on the Warthe River. |
1949 |
| details |
Late Tertiary |
|
Germany(Schleswig) |
Thomson,P.W. Contribution to the micropaleontology and history of Late Tertiary Forests of Niedersachsen and Schleswig-Holstein |
1948 |
| details |
Late Neogene |
|
E.Germany(Halle) |
Kirchheimer,F. Outline of the botany of the German Brown Coals |
1937 |
| details |
Tertiary |
|
Scotland(Argyll) |
Simpson,J.B. Fossil pollen in Scottish Tertiary Coals. |
1936 |
| details |
Late Pliocene |
|
W.Germany(Hesse) |
Kirchheimer,F. On the Wetterau main Browncoal Seam |
1933 |
| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Utah |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |