| original |
Middle Albian |
Early Cenomanian |
Colorado |
Pannella,G. Palynology of the Dakota Group and Graneros Shale of the Denver Basin. |
1966 |
| original |
Middle Albian |
Early Cenomanian |
Nebraska |
Pannella,G. Palynology of the Dakota Group and Graneros Shale of the Denver Basin. |
1966 |
| details |
Cenomanian |
|
Minnesota |
Davies,E.H. The Anemiacean, Schizaeacean and related spores. An index to genera and species. |
1985 |
| original |
Cenomanian |
|
Minnesota |
Pierce,R.L. Lower Upper Cretaceous plant microfossils from Minnesota. |
1961 |
| details |
Late Cretaceous |
|
Arizona |
Romans,R.C. Palynology of some Upper Cretaceous Coals of Black Mesa, Arizona |
1969 |
| details |
Early Cretaceous |
|
Minnesota |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 4. Supplement to all Groups, (Turmae). |
1966 |
| details |
Late Cretaceous |
|
Arizona |
Romans,R.C. Schizaeaceous fern spores from the Cretaceous of Arizona |
1972 |
| details |
Cretaceous |
|
Arizona |
Romans,R.C. Palynology of some Upper Cretaceous Coals of Black Mesa, Arizona |
1975 |
| details |
Cenomanian |
|
Madagascar |
Chen,Y.Y. Jurassic and Cretaceous palynostratigraphy in the Morondava Basin of Madagaskar. |
1978 |
| details |
Late Cretaceous |
|
Japan(Hokkaido I.) |
Tokunaga,S. et al. A study of Mesozoic pollen and spores in eastern Japan Part 1. The Choshi, Oarai and Futaba Districts. |
1972 |