| original |
Neocomian |
Early Tortonian |
Maryland |
Groot,J.J. et al. Plant microfossils and age of nonmarine Cretaceous sediments of Maryland and Delaware. |
1960 |
| original |
Neocomian |
Early Tortonian |
Delaware |
Groot,J.J. et al. Plant microfossils and age of nonmarine Cretaceous sediments of Maryland and Delaware. |
1960 |
| details |
Cenomanian |
Early Senonian |
New Jersey |
Groot,J.J. et al. Plant microfossils and age of the Raritan, Tuscaloosa and Magothy Formations of the eastern United States. |
1961 |
| details |
Paleocene |
|
Maryland |
Groot,J.J. et al. Some plant microfossils from the Brightseat Formation (Paleocene) of Maryland. |
1962 |
| details |
Tithonian |
Early Berriasian |
England(Dorset) |
Hunt,C.O. Miospores from the Portland Stone Formation and the Lower Part of the Purbeck Formation (Upper Jurassic/Lower Cretaceous) from Dorset, England. |
1985 |