| details |
Early Eocene |
|
Arkansas |
Jones,E.L. Environmental significance of palynomorphs from Lower Eocene sediments of Arkansas. |
1961 |
| details |
Eocene |
Oligocene |
England |
Chandler,M.E.J. The Lower Tertiary floras of Southern England. 4. A summary and survey of findings in the light of recent botanical observatins. |
1964 |
| details |
Middle Wilcox |
|
Mississippi |
Warter,J.L.K. Palynology of a Lignite of Lower Eocene (Wilcox) age from Kemper County, Mississippi, |
1966 |
| details |
Oligocene |
|
England(Isle of Wight) |
Machin,J. Plant microfossils from Tertiary deposits of the Isle of Wight. |
1971 |
| 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 |
Eocene |
Middle Miocene |
Delaware |
Groot,J.J. Plant microfossils of the Calvert Formation of Delaware. |
1992 |