| details |
Wealden |
|
W.Germany(Niedersachsen) |
Thiergart,F. The stratigraphic value of Mesozoic pollen and spores |
1949 |
| details |
Middle Eocene |
Late Eocene |
Washington |
Evans,J.E. Paleoclimatology and paleobotany of the Eocene Chumstick Formation, Cascade range, Washington (USA)-a rapidly subsiding alluvial basin. |
1991 |
| details |
Late Pliocene |
|
Wyoming |
Richmond,G.M. et al. Climatic implications of two pollen analyses from newly recognized rocks of Latest Pliocene age in the Washburn range, Yellowstone National Park, Wyoming. |
1978 |
| details |
Middle Pliocene |
|
Wyoming |
Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains |
1972 |
| details |
Pannonian |
|
Yugoslavia |
Budnar-Tregubov,A. Micropaleobotanical research of the coals from Locevje and Kanizarnica in Slovenia. |
1961 |