| details |
Cenomanian |
|
Minnesota |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Cenomanian |
|
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Mesozoic |
|
Nd |
Kovach,W.L. A review of Mesozoic megaspore-ultrastructure. (In: Ultrastructure of Fossil Spores and Pollen. M.H.Kurmann and J.A.Doyle, editors) |
1994 |
| details |
Cenomanian |
|
Minnesota |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |
| original |
Cenomanian |
|
Minnesota |
Hall,J.W. et al. Megaspore assemblages in the Cretaceous of Minnesota. |
1968 |
| details |
Cenomanian |
|
Minnesota |
Hall,J.W. Ariadnaesporites and Glomerisporites in the Late Cretaceous. |
1975 |
| details |
Nd |
|
Nd |
Dettmann,M.E. Ultrastructure and biogeography of Balmeisporites Cookson and Dettmann,1958. |
1995 |
| details |
Cenomanian |
|
Minnesota |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |