| original |
Middle Eocene |
|
Texas |
Elsik,W.C. Characteristic Eocene palynomorphs in the Gulf Coast, USA. |
1974 |
| details |
Early Eocene |
Middle Eocene |
Mexico(Tamaulipas) |
Martnez-HernЎndez,E. et al. Palynology of the Eocene in the North East of Mexico |
1982 |
| details |
Claiborne |
|
USA(Gulf Coast) |
Frederiksen,N.O. Sporomorph biostratigraphy, floral changes, and paleoclimatology, Eocene and Earliest Oligocene of the eastern Gulf Coast. |
1988 |
| details |
Middle Eocene |
|
California |
Kimyai,A. Eocene palynomorphs from the Black Diamond Mines regional preserve, Contra Costa County, California. |
1993 |