| details |
Eocene |
|
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 |
Late Miocene |
|
Mexico(Veracruz) |
Graham,A. Late Cenozoic evolution of Tropical Lowland vegetation in Veracruz, Mexico. |
1976 |
| details |
Middle Eocene |
Late Eocene |
Panama |
Graham,A. Lisianthius pollen from the Eocene of Panama |
1984 |
| details |
Early Eocene |
Middle Eocene |
Panama |
Graham,A. Paleofloristic and paleoclimatic changes in the Tertiary of northern Latin America |
1989 |