| original |
Middle Eocene |
|
Colombia |
Gonzalez-Guzman,A.E. A palynological study on the Upper Los Cuervos and Mirador Formations (Lower and Middle Eocene;Tibu area, Colombia) |
1967 |
| details |
Early Eocene |
Middle Eocene |
Colombia |
de Porta,J. Stratigraphic Lexicon. Colombia:(Part Two). Tertiary and Quaternary. |
1974 |
| details |
Middle Miocene |
Late Miocene |
Colombia |
Hoorn,C. An environmental reconstruction of the palaeo-Amazon River system (Middle - Late Miocene, northwest Amazonia). |
1994 |
| details |
Middle Miocene |
|
Peru |
Hoorn,C. An environmental reconstruction of the palaeo-Amazon River system (Middle - Late Miocene, northwest Amazonia). |
1994 |