| 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 Bartonian |
|
England(Hampshire) |
Fowler,K. et al. In Situ Coniferous (Taxodiaceous) Tree remains in the Upper Eocene of Southern England |
1973 |
| details |
Oligocene |
|
England(Isle of Wight) |
Machin,J. Plant microfossils from Tertiary deposits of the Isle of Wight. |
1971 |
| 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 |