| original |
Cenomanian |
|
Massachusetts |
Tschudy,R.H. The megaspore genus Henrisporites from the Cretaceous of Massachusetts. |
1975 |
| details |
Cenomanian |
|
Massachusetts |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Middle Cenomanian |
|
Canada(Alberta) |
Singh,C. Cenomanian microfloras of the Peace River area Northwestern Alberta |
1983 |
| details |
Cenomanian |
|
Kansas |
Kovach,W.L. A Cretaceous megaspore flora from the Dakota Formation of Kansas. |
1985 |
| details |
Cenomanian |
|
Kansas |
Kovach,W.L. et al. Megaspores and other dispersed plant remains from the Dakota Formation (Cenomanian) of Kansas, USA. |
1988 |
| details |
Cenomanian |
|
Kansas |
Kovach,W.L. Quantitative palaeoecology of megaspores and other dispersed plant remains from the Cenomanian of Kansas, USA. |
1988 |
| details |
Cenomanian |
|
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Cenomanian |
|
Massachusetts |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |