| original |
Early Oligocene |
|
Colombia |
Hammen,T.Van Der et al. Description of some genera and species of fossil pollen and spores. |
1956 |
| details |
Early Eocene |
Early Miocene |
Colombia |
Hammen,T.Van Der et al. Climatic periodicity and evolution of South American Maestrichtian and Tertiary floras. A study based on pollen anaylsis in Colombia. |
1957 |
| details |
Early Eocene |
Early Miocene |
Colombia |
Hammen,T.Van Der et al. Climatic periodicity and evolution of South American Maestrichtian and Tertiary floras. A study based on pollen anaylsis in Colombia. |
1957 |
| details |
Maastrichtian |
Middle Oligocene |
Colombia |
Hammen,T.Van Der et al. Palynological stratigraphy of the Sabana of Bogota (East Cordillerian of Colombia). |
1957 |
| details |
Early Oligocene |
|
Colombia |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| details |
Early Eocene |
|
Colombia |
Hammen,T.Van Der et al. Paleoclimate, stratigraphy and evolution. |
1964 |
| details |
Maastrichtian |
Paleocene |
Nigeria |
Hammen,T.Van Der et al. Paleoclimate, stratigraphy and evolution. |
1964 |
| details |
Oligocene |
Early Miocene |
British Guiana |
Hammen,T.Van Der et al. A palynological study on the Tertiary and Upper Cretaceous of British Guiana. |
1964 |
| details |
Oligocene |
Early Miocene |
British Guiana |
Hammen,T.Van Der et al. A palynological study on the Tertiary and Upper Cretaceous of British Guiana. |
1964 |
| details |
Eocene |
Recent |
British Guiana |
Hammen,T.Van Der et al. A palynological study on the Tertiary and Upper Cretaceous of British Guiana. |
1964 |
| details |
Middle Eocene |
|
Nigeria |
Hoeken-Klinkenberg,P.M.Van Maastrichtian Paleocene and Eocene pollen spores from Nigeria. |
1966 |
| details |
Early Oligocene |
|
Colombia |
Schuler,M. et al. Palynologic observations in the Amaga Basin (Colombia). |
1970 |
| details |
Early Miocene |
Late Neogene |
Australia(Queensland) |
Hekel,H. Pollen and spore assemblages from Queensland Tertiary sediments. |
1972 |
| details |
Early Oligocene |
|
Colombia |
Hekel,H. Pollen and spore assemblages from Queensland Tertiary sediments. |
1972 |
| details |
Late Eocene |
Miocene |
Colombia |
Doubinger,J. Spore-pollen assemblages from the Tertiary of Colombia. |
1976 |
| details |
Middle Miocene |
|
Venezuela |
Rull,V. Evolution of the manglares neotropics: The Eocene crisis. |
1998 |