Odontochitina |
Odontochitina costata
|
Colorado |
Late Cenomanian |
|
Odontochitina |
Odontochitina operculata
|
Colorado |
Late Cenomanian |
Early Turonian |
Oligosphaeridium |
Oligosphaeridium complex
|
Colorado |
Late Cenomanian |
|
Cyclonephelium |
Cyclonephelium brevispinatum
|
Colorado |
Late Cenomanian |
Early Turonian |
Cleistosphaeridium |
Cleistosphaeridium huguoniotii
|
Colorado |
Late Cenomanian |
|
Maghrebinia |
Maghrebinia membraniphora
|
Colorado |
Late Cenomanian |
|
Trichodinium |
Trichodinium castanea
|
Colorado |
Late Cenomanian |
|
Achomosphaera |
Achomosphaera ramulifera
|
Colorado |
Late Cenomanian |
Early Turonian |
Kallosphaeridium |
Kallosphaeridium sp
|
Colorado |
Late Cenomanian |
|
Pervosphaeridium |
Pervosphaeridium truncatum
|
Colorado |
Late Cenomanian |
|
Palaeohystrichophora |
Palaeohystrichophora infusorioides
|
Colorado |
Late Cenomanian |
Early Turonian |
Pterodinium |
Pterodinium cingulatum
|
Colorado |
Late Cenomanian |
Early Turonian |
Oligosphaeridium |
Oligosphaeridium prolixispinosum
|
Colorado |
Late Cenomanian |
|
Xenascus |
Xenascus sarjeantii
|
Colorado |
Late Cenomanian |
|
Spiniferites |
Spiniferites crassimuratus
|
Colorado |
Late Cenomanian |
|
Litosphaeridium |
Litosphaeridium siphoniphorum
|
Colorado |
Late Cenomanian |
|
Spiniferites |
Spiniferites multibrevis
|
Colorado |
Late Cenomanian |
|