| original |
Cenomanian |
|
Minnesota |
Pierce,R.L. Lower Upper Cretaceous plant microfossils from Minnesota. |
1961 |
| details |
Aptian |
|
Canada(Alberta) |
Singh,C. Microflora of the Lower Cretaceous Mannville Group, east-central Alberta. |
1964 |
| details |
Late Cretaceous |
|
Montana |
Norton,N.J. Palynology of the Upper Cretaceous and Lower Tertiary in the type locality of the Hell Creek Formation |
1965 |
| details |
Late Cretaceous |
|
Montana |
Norton,N.J. et al. Palynology of the Upper Cretaceous and Lower Tertiary in the type locality of the Hell Creek Formation, Montana, USA. |
1969 |
| details |
Cenomanian |
|
Minnesota |
Norton,N.J. et al. Palynology of the Upper Cretaceous and Lower Tertiary in the type locality of the Hell Creek Formation, Montana, USA. |
1969 |
| details |
Late Turonian |
Coniacian |
Utah |
Orlansky,R. Palynology of the Upper Cretaceous Straight Cliffs Sandstone, Garfield County, Utah. |
1971 |
| details |
Cenomanian |
|
Minnesota |
Orlansky,R. Palynology of the Upper Cretaceous Straight Cliffs Sandstone, Garfield County, Utah. |
1971 |
| details |
Hauterivian |
Maastrichtian |
USSR |
Boytsova,E.P. et al. Miospores of some ancient plants in the USSR. |
1979 |
| details |
Cenomanian |
|
Minnesota |
Boytsova,E.P. et al. Miospores of some ancient plants in the USSR. |
1979 |