| original |
Early Eocene |
Middle Eocene |
Argentina(Santa Cruz) |
Archangelsky,S. et al. A study of the most ancient Nothofagus, (Fagaceae), pollen from Patagonia, (Argentina and Chile). |
1974 |
| original |
Middle Eocene |
|
Argentina(Santa Cruz) |
Romero,E.J. Gymnosperm and Fagaceae pollen from the Rio Turbio Formation (Eocene) Santa Cruz, Argentina. |
1977 |
| original |
Early Oligocene |
|
Atlantic Ocean |
Brattseva,G.M. Spores and pollen from Cenozoic sediments of the Falkland Plateau, Site 511, Deep Sea Drilling Project Leg 71. |
1983 |