| original |
Late Oligocene |
Early Miocene |
Alaska(Bering Sea) |
Matsuoka,K. et al. Cenozoic dinoflagellate cysts from the Navarin Basin, Norton Sound and St.George Basin, Bering Sea. |
1988 |
| details |
Late Paleocene |
Miocene |
Alaska(Bering Sea) |
Matsuoka,K. et al. Cenozoic dinoflagellate cysts from the Navarin Basin, Norton Sound and St.George Basin, Bering Sea. |
1988 |
| details |
Early Oligocene |
|
Japan(Ibaraki Pref.) |
Kurita,H. et al. Trinovantedinium boreale, Bujak: Dominated dinoflagellate assemblages in Eocene-Oligocene stratified water in northern Japan. |
1994 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Oligocene |
Early Pleistocene |
South Korea |
Yun,H. et al. Biostratigraphy and paleoenvironment of the Cheju Sedimentary Basin: Based on materials from exploration wells, Geobuk-1 and Okdom-1. |
1999 |