| details |
Early Miocene |
|
W.Germany(N.Rhine) |
Neuy-Stolz,G. The flora of the Lower Rhine Basin during the formation of the main seam with special attention to the pollen and fungus remnants in the light layers. |
1958 |
| details |
Oligocene |
Middle Miocene |
W.Germany(N.Rhine) |
Stolz,G. Plant ecosystem of the Rhine Browncoal and their succession in special reference to the Bright Layers. |
1954 |
| details |
Miocene |
|
Washington |
Barnett,J. et al. Palynology and paleoecology of a sedimentary interbed in the Yakima Basalt, (Miocene), Palouse Falls, Washington. |
1980 |
| details |
Eocene |
|
Wyoming |
Santucci,V.L. The Yellowstone Paleontological Survey. |
1998 |