| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| details | Danian | Ypresian | Virginia | Frederiksen,N.O. Paleogene sporomorph biostratigraphy, Northeastern Virginia. | 1979 |
| details | Danian | Ypresian | Virginia | Frederiksen,N.O. Rates of floral turnover and diversity change in the fossil record. | 1991 |