| original |
Albian |
|
Oklahoma |
Hedlund,R.W. et al. Spores and pollen grains from Fredericksburgian, (Albian), Strata, Marshall County, Oklahoma. |
1968 |
| details |
Albian |
|
Oklahoma |
Potonie,R. Synopsis of the genera of the sporae dispersae.Part 7 |
1975 |
| details |
Albian |
|
Nd |
Schluter,T. The eoevolutionary relationship between angiosperm pollen and insects in the Late Mesozoic. |
1987 |
| details |
Albian |
Cenomanian |
Russia(Siberia) |
Chlonova,A.F. et al. Comparative analysis of sporoderm ultrastructure of Clavatipollenites incisus and two species of Ascarina (Chloranthaceae). |
1988 |
| details |
Middle Albian |
|
Canada(Alberta) |
Burden,E.T. et al. Palynomorphs of the Upper Blairmore Group, Southwestern Alberta |
1990 |