| details |
Late Cretaceous |
Early Paleocene |
South Dakota |
Stanley,E.A. Upper Cretaceous and Lower Tertiary sporomorphae from Northwestern South Dakota. |
1961 |
| original |
Late Cretaceous |
|
South Dakota |
Stanley,E.A. Upper Cretaceous and Paleocene plant microfossils and Paleocene dinoflagellates and hystrichosphaerids from northwestern South Dakota. |
1965 |
| details |
Maastrichtian |
|
North America |
Kedves,M. et al. About paleophytogeographic regions of the Cretaceous and of the Paleogene, according to palynologic data. |
1968 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| details |
Late Cretaceous |
|
USA |
Farabee,M.J. Morphology and evolution of Libopollis and some Anacolosidites sp., from the Upper Cretaceous. |
1985 |
| details |
Late Cretaceous |
|
Georgia |
Farabee,M.J. Numerical analysis of a Suspected Upper Cretaceous pollen Lineage-Libopollis to Anacolosidites, (in part). |
1986 |