| details |
Middle Eocene |
|
Texas |
Frederiksen,N.O. et al. Taxonomy and biostratigraphy of Late Cretaceous and Paleogene Triatriate pollen from South Carolina. |
1978 |
| details |
Early Eocene |
|
California |
Frederiksen,N.O. Late Paleocene and Early Eocene sporomorphs and thermal alteration of organic matter in the Santa Susana Formation, Southern California. (In: Cenozoic geology of the Simi Valley area Southern California -R.R.Squires and M.V.Filewicz, editors) |
1983 |
| details |
Middle Miocene |
|
Massachusetts |
Frederiksen,N.O. Stratigraphic, paleoclimatic and paleobiogeographic significance of Tertiary sporomorphs from Massachusetts |
1984 |
| details |
Late Sabinian |
|
USA(Gulf Coast) |
Frederiksen,N.O. Sporomorph biostratigraphy, floral changes, and paleoclimatology, Eocene and Earliest Oligocene of the eastern Gulf Coast. |
1988 |
| details |
Ypresian |
|
California |
Frederiksen,N.O. Eocene sporomorph biostratigraphy of Southern California |
1989 |
| details |
Early Eocene |
|
Alabama |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Early Eocene |
|
Alabama |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Early Eocene |
|
Georgia |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Early Eocene |
|
Georgia |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Early Eocene |
|
Mississippi |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Early Eocene |
|
Mississippi |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Late Paleocene |
Early Eocene |
Virginia |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |
| details |
Late Paleocene |
Early Eocene |
Virginia |
Frederiksen,N.O. Upper Paleocene and Lowermost Eocene Angisperm pollen biostratigraphy of the eastern Gulf coast and Virginia |
1998 |