| details |
Early Cenomanian |
Middle Cenomanian |
Canada(Alberta) |
Singh,C. Cenomanian microfloras of the Peace River area Northwestern Alberta |
1983 |
| details |
Late Barremian |
Early Albian |
Canada(Alberta) |
Burden,E.T. Terrestrial palynomorph biostratigraphy of the Lower Part of the Mannville Group, (Lower Cretaceous) Alberta and Montana. (In: The Mesozoic of Middle North America. D.F.Stott and D.J.Glass, editors) |
1984 |
| details |
Late Albian |
|
Kansas |
Ward,J.V. Early Cretaceous angiosperm pollen from the Cheyenne and Kiowa Formations, (Albian) of Kansas, USA. |
1986 |
| details |
Late Aptian |
Early Albian |
Canada(Alberta) |
Burden,E.T. et al. Illustrated key to genera of Lower Cretaceous terrestrial palynomorphs, (excluding megaspores), of Western Canada. (Stratigraphic ranges and sample locations taken from E.T.Burden,1982 - Lower Cretaceous terrestrial palynomorph biostratigraphy of the McMurray Formation, northeastern Alberta, Unpub.Phd Thesis) |
1989 |
| details |
Aptian |
Albian |
North America |
Burden,E.T. et al. Illustrated key to genera of Lower Cretaceous terrestrial palynomorphs, (excluding megaspores), of Western Canada. (Stratigraphic ranges and sample locations taken from E.T.Burden,1982 - Lower Cretaceous terrestrial palynomorph biostratigraphy of the McMurray Formation, northeastern Alberta, Unpub.Phd Thesis) |
1989 |
| details |
Vraconian |
Early Cenomanian |
Canada(Alberta) |
Leckie,D.A. et al. An anoxic events at the Albian-Cenomanian boundary ; The Fish Scale Marker Bed, northern Alberta, Canada. |
1992 |