| details |
Late Oligocene |
Middle Miocene |
Argentina(Chubut) |
Barreda,V.D. Pollen and spores biostratigraphy of the Chenque Formation, Late Oligocene?-Miocene from Chubut and Santa Cruz Provinces, Patago Argentina |
1996 |
| details |
Cenomanian |
Early Senonian |
Alabama |
Groot,J.J. et al. Plant microfossils and age of the Raritan, Tuscaloosa and Magothy Formations of the eastern United States. |
1961 |
| details |
Late Cretaceous |
Early Paleogene |
Africa |
Song,Z.-C. et al. Compaison of palynomorph assemblages from the Cretaceous/Tertiary boundary interval in Western Europe, Northwest Africa and South China |
1997 |