| original |
Middle Miocene |
|
Germany |
Krutzsch,W. Information on fossil dispersed tetrad pollen. |
1970 |
| details |
Middle Eocene |
|
USSR(Irkutskaya Oblast) |
Kondratev,G.K. Spore-pollen complexes from Buaxite sediments of the Soviet Priangarie and its stratigraphical significance. |
1973 |
| details |
Early Paleocene |
|
Canada(Arctic) |
Norris,G. et al. Arctic biostratigraphic heterochroneity. (Kent et al,1984 (Reply by G.Norris, A.D.Miall et al.) |
1984 |
| details |
Late Oligocene |
|
Alaska |
Wiggins,V.D. et al. Changes in Non-Marine palynofloras from the Oligocene of Alaska, USA. |
1988 |
| details |
Early Oligocene |
|
Alaska |
Marincovich,L.,Jr. et al. Oligocene age of strata on Unga Island, Shumagin Islands, Southwestern Alaska. (In: Geologic Studies in Alaska by the United States Geological Survey. J.H. and J.P.Galloway, editors) |
1991 |