| 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 |
| details |
Miocene |
|
Germany |
Kirchheimer,F. On the preparation of slides for the contrast reproduction of fossil pollen. |
1933 |
| details |
Late Pliocene |
|
W.Germany(Hesse) |
Kirchheimer,F. On the Wetterau main Browncoal Seam |
1933 |
| details |
Cretaceous |
|
Nd |
Deflandre,G. The presence of Conifer, (Abietineae), pollen in Flint in the Chalk. The pollen accumulation of the Cretaceous Epoque. |
1934 |
| details |
Tertiary |
|
W.Germany |
Kirchheimer,F. Corrosion of the pollen |
1935 |
| details |
Tertiary |
|
W.Germany |
Kirchheimer,F. Corrosion of the pollen |
1935 |
| details |
Late Pliocene |
|
Alabama |
Kirchheimer,F. Pollen content of the U. Pliocene Browncoal of the Lower main area. |
1935 |
| details |
Late Pliocene |
|
Mississippi |
Kirchheimer,F. Pollen content of the U. Pliocene Browncoal of the Lower main area. |
1935 |
| details |
Tertiary |
|
Scotland(Argyll) |
Simpson,J.B. Fossil pollen in Scottish Tertiary Coals. |
1936 |
| details |
Miocene |
|
Germany |
Kirchheimer,F. Outline of the botany of the German Brown Coals |
1937 |
| details |
Paleocene |
|
Montana |
Wilson,L.R. et al. Plant microfossils from a Fort Union Coal of Montana. |
1946 |
| details |
Early Tertiary |
|
Iceland |
Askelsson,E.J. Is it possible to find microflora in Icelandic Tertiary Lignite? |
1946 |
| details |
Late Pliocene |
|
Netherlands |
Florschutz,F. et al. The paleobotanical boundary Pliocene-Pleistocene in the Netherlands |
1950 |
| details |
Middle Miocene |
|
W.Germany(Hesse) |
Kremp,G.O.W. Pollen analysis of the Brown Coal Seams of Beuern near Giessen. |
1950 |
| details |
Miocene |
|
W.Germany(Niedersachsen) |
Kremp,G.O.W. Pollen analysis of Brown Coal in the southern part of Niedersachsen, especially in the Solling. |
1950 |
| details |
Middle Oligocene |
Miocene |
W.Germany(Niedersachsen) |
Kremp,G.O.W. Pollen analysis of Brown Coal in the southern part of Niedersachsen, especially in the Solling. |
1950 |