Achomosphaera |
Achomosphaera ramulifera
|
Arizona |
Late Cenomanian |
Early Turonian |
Achomosphaera |
Achomosphaera sagena
|
Arizona |
Late Cenomanian |
|
Avellodinium |
Avellodinium sp
|
Arizona |
Late Cenomanian |
|
Batiacasphaera |
Batiacasphaera euteiches
|
Arizona |
Late Cenomanian |
|
Batiacasphaera |
Batiacasphaera reticulata
|
Arizona |
Late Cenomanian |
Early Turonian |
Chytroeisphaeridia |
Chytroeisphaeridia baetica
|
Arizona |
Late Cenomanian |
Early Turonian |
Chytroeisphaeridia |
Chytroeisphaeridia minor
|
Arizona |
Late Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium aciculare
|
Arizona |
Late Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium armatum
|
Arizona |
Late Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium clavulum
|
Arizona |
Late Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium huguoniotii
|
Arizona |
Late Cenomanian |
Early Turonian |
Cleistosphaeridium |
Cleistosphaeridium multispinosum
|
Arizona |
Late Cenomanian |
Early Turonian |
Cleistosphaeridium |
Cleistosphaeridium parvum
|
Arizona |
Late Cenomanian |
|
Cordosphaeridium |
Cordosphaeridium sp
|
Arizona |
Early Turonian |
|
Coronifera |
Coronifera minor
|
Arizona |
Cretaceous |
|
Coronifera |
Coronifera oceanica
|
Arizona |
Late Cenomanian |
|
Coronifera |
Coronifera striolata
|
Arizona |
Late Cenomanian |
Early Turonian |