| details |
Albian |
|
Nd |
Doyle,J.A. et al. Diversification of early angiosperm pollen in cladistic context. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |
| details |
Nd |
|
Nd |
Ibrahim,M.I.A. New angiosperm pollen from the upper Barremian - Aptian of the Western Desert, Egypt. |
2002 |
| details |
Early Cretaceous |
|
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1963 |
| details |
Cenomanian |
|
Minnesota |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1963 |