| original |
Maastrichtian |
|
Canada(Alberta) |
Snead,R.G. Microfloral diagnosis of the Cretaceous-Tertiary boundary, Central Alberta. |
1969 |
| details |
Campanian |
Maastrichtian |
Canada(Alberta) |
Gunther,P.R. et al. Megaspore palynology of the Brazeau Formation (Upper Cretaceous), Nordegg area, Alberta. |
1970 |
| details |
Cretaceous |
Early Paleocene |
Canada(Alberta) |
Sweet,A.R. et al. Evolution of Azolla and Azollopsis during the Upper Cretaceous and Lower Tertiary. |
1971 |
| details |
Late Cretaceous |
|
Canada(Alberta) |
Wall,J.H. et al. Paleoecology of the Bearpaw and contiguous Upper Cretaceous Formations in the C.P.O.G.Strathmore Well, Southern Alberta. |
1971 |
| details |
Campanian |
Maastrichtian |
Canada(Alberta) |
Gunther,P.R. et al. Megaspores and other palynomorphs of the Brazeau Formation (Upper Cretaceous) Nordegg area, Alberta, Canada. |
1972 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| details |
Late Cretaceous |
|
Canada(Alberta) |
Speelman,J.D. et al. Megaspore paleoecology |
1980 |
| details |
Nd |
|
Nd |
Yang,J. et al. Megaspores and their geological significance. |
1985 |
| details |
Santonian |
Thanetian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Maastrichtian |
|
Canada(Alberta) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Cretaceous |
|
Nd |
Ramanujam,C.G.K. et al. Remain of Azollaceae from Late Albian of Cauvery Basin and their evolutionary significance. |
1996 |