| details |
Middle Eocene |
Early Oligocene |
Mississippi |
Frederiksen,N.O. Sporomorphs from the Jackson Group, (Upper Eocene) and adjacent strata of Mississippi and western Alabama. |
1980 |
| details |
Middle Eocene |
Early Oligocene |
Alabama |
Frederiksen,N.O. Sporomorphs from the Jackson Group, (Upper Eocene) and adjacent strata of Mississippi and western Alabama. |
1980 |
| details |
Middle Eocene |
Late Eocene |
Missouri |
Frederiksen,N.O. et al. Biostratigraphy and paleoecology of Lower Paleozoic, Upper Cretaceous and Lower Tertiary rocks in U.S.Geological Survey New Madrid test wells, southeastern Missouri. |
1982 |
| details |
Middle Eocene |
|
Texas |
Jones,J.G. et al. Pollen and spores from the type section of the Middle Eocene Stone City Formation, Burleson County, Texas. |
1991 |
| details |
Middle Eocene |
|
Texas |
Jones,J.G. et al. Pollen and spores from the type section of the Middle Eocene Stone City Formation, Burleson County, Texas. |
1991 |