| details |
Oligocene |
Miocene |
South America |
Wijmstra,T.A. The Identity of Psilatricolporites and Pelliciera |
1968 |
| details |
Oligocene |
Miocene |
Brazil(Amazonas) |
de Boer,N.P. et al. A palynological study on the age of some borehole samples from the Amazonas Delta area, northwest Brazil. |
1965 |
| 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 |
Early Eocene |
Early Oligocene |
British Guiana |
Hammen,T.Van Der et al. A palynological study on the Tertiary and Upper Cretaceous of British Guiana. |
1964 |