| original |
Middle Valanginian |
Late Cenomanian |
Atlantic Coast Offshore |
Habib,D. et al. Stratigraphic utility of Cretaceous small acritarchs. |
1982 |
| details |
Late Hauterivian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Cretaceous |
|
Atlantic Ocean |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Early Cretaceous |
Middle Cretaceous |
Atlantic Ocean |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |