| original |
Early Cretaceous |
|
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1963 |
| original |
Neocomian |
Albian |
Maryland |
Brenner,G.J. The spores and pollen of the Potomac Group of Maryland |
1962 |
| details |
Barremian |
Early 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 |
Cenomanian |
Early Turonian |
China(N.China) |
Li,W. et al. The Cretaceous palynofloras and their bearing on stratigraphic correlation in China. |
1994 |
| details |
Cenomanian |
Early Turonian |
China(N.China) |
Li,W. et al. The Cretaceous palynofloras and their bearing on stratigraphic correlation in China. |
1994 |
| details |
Aptian |
|
Canada(NWT,Mackenzie) |
Brideaux,W.W. et al. Miospores and microplankton from Aptian-Albian rocks along Horton River, District of MacKenzie |
1975 |
| details |
Valanginian |
Middle Albian |
North America |
Burden,E.T. et al. Illustrated key to genera of Lower Cretaceous terrestrial palynomorphs, (excluding megaspores), of Western Canada. (Stratigraphic ranges and sample locations taken from E.T.Burden,1982 - Lower Cretaceous terrestrial palynomorph biostratigraphy of the McMurray Formation, northeastern Alberta, Unpub.Phd Thesis) |
1989 |
| details |
Late Barremian |
Early Aptian |
Canada(Alberta) |
Burden,E.T. et al. Illustrated key to genera of Lower Cretaceous terrestrial palynomorphs, (excluding megaspores), of Western Canada. (Stratigraphic ranges and sample locations taken from E.T.Burden,1982 - Lower Cretaceous terrestrial palynomorph biostratigraphy of the McMurray Formation, northeastern Alberta, Unpub.Phd Thesis) |
1989 |
| details |
Middle Albian |
Late Albian |
Canada(Manitoba) |
Playford,G. Palynology of the Basal Cretaceous (Swan River) strata of Saskatchewan and Manitoba |
1971 |
| details |
Middle Albian |
Late Albian |
Canada(Saskatchewan) |
Playford,G. Palynology of the Basal Cretaceous (Swan River) strata of Saskatchewan and Manitoba |
1971 |
| details |
Late Barremian |
|
Canada(Alberta) |
White,J.M. et al. Palynological age constraints on the Cadomin and Dalhousie Formations in SW Alberta. |
1999 |