| details |
Maastrichtian |
Danian |
Wyoming |
Tschudy,R.H. Stratigraphic distribution of species of the megaspore genus Minerisporites in North America. |
1976 |
| details |
Maastrichtian |
Danian |
Montana |
Tschudy,R.H. Stratigraphic distribution of species of the megaspore genus Minerisporites in North America. |
1976 |
| details |
Cenomanian |
|
Iowa |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Paleocene |
|
North Dakota |
Melchior,R.C. et al. Some megaspores and other small fossils from the Wannagan Creek Site, (Paleocene), North Dakota. |
1983 |
| details |
Late Paleocene |
|
England(Kent) |
Collinson,M.E. et al. Palaeozoic, Mesozoic and contemporaneous megaspores from the Tertiary of Southern England: Indicators of sedimentary provenace and ancient vegetation. |
1985 |
| details |
Paleocene |
|
North Dakota |
Melchior,R.C. et al. Geological observations of the occurrence of some Paleocene megaspores and Allied forms |
1983 |
| details |
Early Paleocene |
|
Canada(Saskatchewan) |
Sweet,A.R. Palynology of the Ravenscrag and Frenchman Formation. (In: Coal Resources of Southern Saskatchewan: A model for evaluation methodology. S.H.Whitaker, J.A.Irvine and P.L.Broughton, editors) |
1978 |
| details |
Late Paleocene |
|
England(Berkshire) |
Collinson,M.E. Freshwater macrophytes in palaeolimnology |
1988 |
| details |
Thanetian |
|
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Paleocene |
|
Montana |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Morphological reassessment of some zonate coronate megaspore genera of mainly post-Palaeozoic age. |
1993 |
| details |
Early Tertiary |
|
Montana |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Cenomanian |
|
Arizona |
Agasie,J.M. Late Cretaceous palynomorphs from northeastern Arizona. |
1969 |
| details |
Cenomanian |
|
Iowa |
Hall,J.W. Megaspores and other fossils in the Dakota Formation, (Cenomanian), of Iowa, USA. |
1963 |
| details |
Cenomanian |
|
Minnesota |
Hall,J.W. et al. Megaspore assemblages in the Cretaceous of Minnesota. |
1968 |