| details |
Late Cretaceous |
|
Iowa |
Hall,J.W. et al. Paxillitriletes, a new name for fossil megaspores hitherto invalidly named Thomsonia. |
1973 |
| details |
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 |
Cenomanian |
Turonian |
Canada(Arctic) |
Sweet,A.R. Jurassic and Cretaceous megaspores. |
1979 |
| details |
Cretaceous |
|
Alaska(North Slope) |
Scott,R.A. et al. Some Cretaceous plant Megafossils and microfossils from the Nanushuk Group, northern Alaska |
1979 |
| details |
Cenomanian |
Early Campanian |
USA(Rocky Mountains) |
Nichols,D.J. et al. Cretaceous palynomorph biozones for the Central and northern Rocky Mountain Region of the United States. |
1982 |
| details |
Middle Cenomanian |
Late 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. Morphology, ulstrastructure and paleoecology of Paxillitriletes vittatus, sp.nov. from the Midde Cretaceous, (Cenomanian) 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 |
Turonian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Cenomanian |
|
Iowa |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| 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 |