| original |
Albian |
|
Nd |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1962 |
| 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 |
Middle Albian |
Late Albian |
Morocco |
Gubeli,A.A. et al. Lower Cretacous Turbiditic Sediments from the Rif Chain, (Northern Morocco). Palynology, stratigraphy and palaeogeographic setting. |
1984 |
| original |
Cenomanian |
|
Minnesota |
Pierce,R.L. Lower Upper Cretaceous plant microfossils from Minnesota. |
1961 |
| details |
Late Cretaceous |
|
Minnesota |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 5. Supplement to all Groups (Turmae). |
1970 |
| details |
Cenomanian |
|
Minnesota |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1963 |
| details |
Late Aptian |
|
Maryland |
Upchurch,G.R. et al. Paleoecology of the Conifers Frenlopsis and Pseudofrenelopsis (Cheirolepidiaceae) from the Cretaceous Potomac Group of Maryland and Virginia. (In: Geobotany II -Edited by R.C.Romans) |
1981 |
| details |
Barremian |
Early Cenomanian |
Maryland |
Doyle,J.A. Palynostratigraphic zonation. (In: New data bearing on the structural significance of the Upper Chesapeake Bay magnetic anomaly. J.Edwards and H.J. Hansen) |
1979 |
| details |
Late Albian |
|
Maryland |
Kedves,M. Transmission electron microscopy of the fossil angiosperm exines. |
1990 |
| details |
Early Albian |
|
Maryland |
Doyle,J.A. Angiosperm pollen and correlation of Potomac megafossil localities. |
1974 |
| details |
Early Albian |
Middle Albian |
Maryland |
Robbins,E.I. et al. Palynological and stratigraphic investigations of four deep wells in the Salisbury Embayment of the Atlantic Coastal Plain. |
1975 |
| details |
Barremian |
Early Cenomanian |
Maryland |
Doyle,J.A. et al. Angiosperm pollen zonation of the Continental Cretaceous of the Atlantic Coastal Plain and its application to deep wells in the Salisbury Embayment. |
1977 |
| details |
Aptian |
Early Albian |
Maryland |
Doyle,J.A. et al. Angiosperm pollen zonation of the Continental Cretaceous of the Atlantic Coastal Plain and its application to deep wells in the Salisbury Embayment. |
1977 |
| details |
Barremian |
Albian |
Maryland |
Hickey,L.J. et al. Early Cretaceous fossil evidence for angiosperm evolution. |
1977 |
| details |
Early Cretaceous |
|
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1963 |
| details |
Late Albian |
|
Kansas |
Ward,J.V. Early Cretaceous angiosperm pollen from the Cheyenne and Kiowa Formations, (Albian) of Kansas, USA. |
1986 |