| details |
Lutetian |
Bartonian |
Venezuela |
Rull,V. Sequence analysis of Western Venezuelan Cretaceous to Eocene sediments using palynology: Chrono-paleoenvironmental and paleovegetational approaches |
1997 |
| details |
Early Eocene |
|
Venezuela |
Rull,V. Palaeofloristic and palaeovegetational changes across the Paleocene/Eocene boundary in northern South America |
1999 |
| details |
Early Eocene |
|
Venezuela |
Rull,V. Ecostratigraphic study of Paleocene and Early Eocene palynological cyclicity in northern South America. |
2000 |
| 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 |