| details |
Early Eocene |
Middle Eocene |
Belgium |
Roche,E. Belgium. (In: The Northwest European Tertiary Basin. R.Vinken, compiler) |
1988 |
| details |
Early Ypresian |
|
Belgium |
Roche,E. Sporopollinic biostratigraphy and Ypresian paleoenvironment |
1990 |
| details |
Eocene |
|
Alaska |
Frederiksen,N.O. et al. Botanical, paleoecologic, paleobiogeographic, and paleoclimatic significance of the Eocene pollen species "Diporites" and Iszkszenthyorgyi, Kedves, 1965. |
1981 |
| details |
Early Eocene |
|
Alaska |
Frederiksen,N.O. et al. Distribution, paleoecology, paleoclimatology, and botanical affinity of the Eocene pollen genus Diporoconia, n.gen. |
1985 |