| original |
Middle Miocene |
|
USSR(Primorsk Kray) |
Bolotnikova,M.D. Spore and pollen assemblages from Tertiary deposits of the Western Shore of the Japanese Sea. |
1979 |
| original |
Early Pliocene |
|
Canada(Arctic) |
Aksu,A.E. et al. Upper Cenozoic history of the Labrador Sea, Baffin Bay and Arctic Ocean; a paleoclimatic and paleoceanographic summary. |
1988 |
| original |
Early Pliocene |
Middle Pliocene |
Canada(Arctic) |
Aksu,A.E. et al. Magnetostratigraphy and palynology Demonstrate at Least 4 Million years of Arctic sedimentation |
1985 |