| details |
Early Cretaceous |
Paleocene |
Texas |
Grayson,J.F. et al. Floristic interpretations from Cretaceous Polospores of Central Texas |
1959 |
| 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 |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 5. Supplement to all Groups (Turmae). |
1970 |
| details |
Eocene |
|
Colombia |
Muller,J. Reflections of fossil Palm pollen. |
1979 |
| details |
Nd |
|
Nd |
Muller,J. et al. A palynological zonation for the Cretaceous, Tertiary and Quaternary of northern South America. |
1987 |