| details |
Cenomanian |
|
Minnesota |
Zavada,M.S. Angiosperm origins and evolution based on dispersed fossil pollen ultrastructure. (In: Historical Perspectives of Angiosperm Evolution.) |
1984 |
| details |
Cenomanian |
|
Minnesota |
Zavada,M.S. Angiosperm origins and evolution based on dispersed fossil pollen ultrastructure. (In: Historical Perspectives of Angiosperm Evolution.) |
1984 |
| details |
Jurassic |
|
England(Humbershire) |
Zavada,M.S. et al. Pollen grain wallstructure of Caytonanthus arberi (Caytoniales). |
1986 |
| details |
Late Cretaceous |
|
Kentucky |
Tschudy,R.H. Palynology of the Cretaceous-Tertiary boundary in the northern Rocky Mountain and Mississippi Embayment Regions. (In: Symposium on Palynology of the Late Cretaceous and Early Tertiary. R.M Kosanke and A.T. Cross, editors) |
1970 |
| details |
Maastrichtian |
|
USA |
Penny,J.S. Late Cretaceous and Early Tertiary palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Late Cretaceous |
|
Alabama |
Penny,J.S. Late Cretaceous and Early Tertiary palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) |
1969 |
| details |
Cretaceous |
|
Nd |
Osborn,J.M. et al. Comparative ultrastructure of fossil gymnosperm pollen and its phylogenetic implications. (In: Ultrastructure of Fossil Spores and Pollen. M.H.Kurmann and J.A.Doyle, editors) |
1994 |
| details |
Middle Maastrichtian |
Late Maastrichtian |
North Dakota |
Artzner,D.G. Palynology of a Volcanic Ash in the Fox Hills Formation, (Maestrichtian), of Emmons, Morton, and Sioux Counties, North Dakota. |
1974 |