| details |
Eocene |
|
Wyoming |
Fisk,L.H. et al. Additional Conifers from the Eocene Amethyst Mountain "Fossil Forest", Yellowstone National Park, Wyoming. |
1978 |
| details |
Eocene |
|
Wyoming |
Fisk,L.H. Palynology and paleoecology of the Eocene "Fossil Forest" of Yellowstone National Park, Wyoming, USA. |
1976 |
| details |
Pannonian |
|
Yugoslavia |
Budnar-Tregubov,A. Micropaleobotanical research of the coals from Locevje and Kanizarnica in Slovenia. |
1961 |
| details |
Early Pliocene |
|
Yugoslavia |
Ercegovac,M. Palynologic and petrologic characteristics and the genesis of Coal in the Kreka Basin. |
1970 |