| details |
Middle Oligocene |
|
Caribbean |
Graham,A. et al. Studies in Neotropical paleobotany. 1. The Oligocene communities of Puerto Rico. |
1969 |
| details |
Oligocene |
|
Caribbean |
Graham,A. Some aspects of Tertiary vegetational history about the Caribbean Basin |
1972 |
| details |
Middle Eocene |
Early Oligocene |
Mississippi |
Frederiksen,N.O. Mid-Tertiary climate of southeastern Unites States: The sporomorph evidence. |
1980 |
| details |
Middle Eocene |
Early Oligocene |
Alabama |
Frederiksen,N.O. Mid-Tertiary climate of southeastern Unites States: The sporomorph evidence. |
1980 |
| details |
Late Neogene |
|
China(Hopei) |
Li,W.-Y. et al. The Pliocene spore-pollen assemblage of Huang Hua in Hebei Plain and its significance in palaeobotany and palaeogeography |
1981 |
| details |
Late Miocene |
|
Ethiopia |
Yemane,K. et al. Pollen and clay mineral assemblages of a Late Miocene lacustrine sequence. |
1987 |