| details |
Middle Eocene |
Late Eocene |
W.Germany(Schleswig) |
Klumpp,B. Contribution to the knowledge of microfossils of the Middle and Upper Eocene |
1953 |
| details |
Eocene |
Late Oligocene |
W.Germany |
Maier,D. Investigation of plankton in Tertiary and Quaternary marine sediments. |
1959 |
| details |
Miocene |
Late Neogene |
Atlantic Ocean |
Emiliani,C. et al. Neogene sedimentation on the Blake Plateau and the Emergence of the Central American Isthmus. |
1972 |
| details |
Late Neogene |
|
USA(Gulf of Mexico) |
Shaffer,B.L. Electron-probe microanalysis of calcareous nannofossils. |
1973 |