Osmundacidites |
Osmundacidites wellmanii
|
Iowa |
Early Cenomanian |
Middle Cenomanian |
Foveogleicheniidites |
Foveogleicheniidites confossus
|
Iowa |
Middle Cenomanian |
|
Gleicheniidites |
Gleicheniidites senonicus
|
Iowa |
Cenomanian |
|
Gleicheniidites |
Gleicheniidites sp.1 Ravn & Witz.,1995
sp. nov. |
Iowa |
Middle Cenomanian |
|
Gleicheniidites |
Gleicheniidites sp.2 Ravn & Witz.,1995
sp. nov. |
Iowa |
Middle Cenomanian |
|
Plicifera |
Plicifera dicarpoides
|
Iowa |
Late Albian |
Cenomanian |
Gleichenia |
Gleichenia dicarpoides
|
Iowa |
Late Albian |
Cenomanian |
Dictyophyllidites |
Dictyophyllidites harrisii
|
Iowa |
Late Albian |
Cenomanian |
Dictyophyllidites |
Dictyophyllidites impensus
|
Iowa |
Cenomanian |
|
Crybelosporites |
Crybelosporites bursatus
|
Iowa |
Middle Cenomanian |
Late Cenomanian |
Perotrilites |
Perotrilites bursatus
|
Iowa |
Middle Cenomanian |
Late Cenomanian |
Crybelosporites |
Crybelosporites brenneri
|
Iowa |
Middle Cenomanian |
Late Cenomanian |
Crybelosporites |
Crybelosporites pannuceus
|
Iowa |
Middle Cenomanian |
|
Crybelosporites |
Crybelosporites striatus
|
Iowa |
Early Cenomanian |
Middle Cenomanian |
Cibotiumspora |
Cibotiumspora jurienensis
|
Iowa |
Early Cenomanian |
Middle Cenomanian |
Foveosporites |
Foveosporites cenomanicus
|
Iowa |
Early Cenomanian |
|
Foveosporites |
Foveosporites subtriangularis
|
Iowa |
Middle Cenomanian |
|