| original |
Early Eocene |
|
Canada(Atlantic Coast) |
Head,M.J. et al. Palynology and dinocyst stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 647A, Labrador Sea. |
1989 |
| original |
Late Maastrichtian |
Early Danian |
Alabama |
Moshkovitz,S. et al. Calcareous nannofossil and dinoflagellate stratigraphy of the Cretaceous-Tertiary boundary, Alabama and Georgia |
1993 |
| original |
Late Cenomanian |
|
Arizona |
Li,H. et al. Dinoflagellate stratigraphy and its response to sea level change in Cenomanian-Turonian sections of the Western Interior of the United States. |
1996 |