| original |
Late Cretaceous |
|
Iowa |
Schemel,M.P. Cretaceous plant microfossils from Iowa |
1950 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| 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 |
Cenomanian |
Maastrichtian |
Nd |
Hall,J.W. Cretaceous Salviniaceae. |
1974 |
| details |
Cenomanian |
Turonian |
France |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Cenomanian |
|
Kansas |
Kovach,W.L. Quantitative palaeoecology of megaspores and other dispersed plant remains from the Cenomanian of Kansas, USA. |
1988 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Nd |
|
Nd |
Collinson,M.E. Diversification of modern Heterosporous Pteridophytes. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |
| details |
Cretaceous |
Paleocene |
Europe |
Knobloch,E. et al. Evolutionary significance of floristic changes in the northern Hemisphere during the reference to Central Europe |
1993 |