| details |
Cenomanian |
|
Russia(Siberia) |
Krassilov,V.A. et al. A new Heterosporous plant from the Cretaceous of West Siberia. |
1999 |
| details |
Aptian |
|
Canada(Alberta) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Aptian |
Albian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Early Cretaceous |
|
China |
Yang,J. et al. Recent advances of megaspores studies in China. |
1987 |
| details |
Middle Albian |
|
Canada(Ontario) |
Norris,G. Mesozoic palynology of the Moose River Basin. (In: Mesozoic geology and mineral potential of Moose River Basin. I.G.Telford and H.M.Verma, editor) |
1982 |
| details |
Aptian |
Albian |
Canada(NWT) |
Sweet,A.R. Jurassic and Cretaceous megaspores. |
1979 |
| details |
Middle Albian |
Late Albian |
Canada(Arctic) |
Miall,A.D. Mesozoic and Tertiary geology of Banks Island, Arctic Canada. The history of an unstable craton margin. |
1979 |
| details |
Early Albian |
|
Canada(Ontario) |
Hopkins,W.S. et al. Miospores and megaspores from the Lower Cretaceous Mattagami Formation of Ontario. |
1976 |
| details |
Albian |
|
Canada(NWT,Mackenzie) |
Brideaux,W.W. et al. Biostratigraphic determinations from the subsurface of the District of Franklin and MacKenzie and the Yukon Teritory |
1976 |
| original |
Aptian |
|
Canada(Alberta) |
Singh,C. Microflora of the Lower Cretaceous Mannville Group, east-central Alberta. |
1964 |