Oligosphaeridium |
Oligosphaeridium dispare
|
Arizona |
Late Cenomanian |
|
Oligosphaeridium |
Oligosphaeridium pulcherrimum
|
Arizona |
Late Cenomanian |
|
Oligosphaeridium |
Oligosphaeridium sp
|
Arizona |
Late Cenomanian |
|
Oligosphaeridium |
Oligosphaeridium sp
|
Colorado |
Late Cenomanian |
Early Turonian |
Oligosphaeridium |
Oligosphaeridium sp
|
Utah |
Late Cenomanian |
Early Turonian |
Oligosphaeridium |
Oligosphaeridium sp
|
New Mexico |
Late Cenomanian |
Early Turonian |
Ovoidinium |
Ovoidinium verrucosum
|
Arizona |
Late Cenomanian |
Early Turonian |
Palaeohystrichophora |
Palaeohystrichophora infusorioides
|
Arizona |
Late Cenomanian |
Early Turonian |
Palaeoperidinium |
Palaeoperidinium cretaceum
|
Nd |
Nd |
|
Pareodinia |
Pareodinia sp
|
Nd |
Nd |
|
Pervosphaeridium |
Pervosphaeridium brevispinum
|
Arizona |
Late Cenomanian |
Early Turonian |
Pervosphaeridium |
Pervosphaeridium cenomaniense
|
Nd |
Nd |
|
Pervosphaeridium |
Pervosphaeridium pseudhystrichodinium
|
Arizona |
Late Cenomanian |
Early Turonian |
Pervosphaeridium |
Pervosphaeridium truncatum
|
Arizona |
Early Turonian |
|
Prolixosphaeridium |
Prolixosphaeridium conulum
|
Arizona |
Late Cenomanian |
Early Turonian |
Pseudoceratium |
Pseudoceratium eisenackii
|
Arizona |
Late Cenomanian |
Early Turonian |
Pterodinium |
Pterodinium cingulatum
|
Arizona |
Late Cenomanian |
|