Oligosphaeridium |
Oligosphaeridium pulcherrimum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Surculosphaeridium |
Surculosphaeridium longifurcatum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Tanyosphaeridium |
Tanyosphaeridium variecalamum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Coronifera |
Coronifera oceanica
|
Arizona |
Late Cenomanian |
Middle Turonian |
Diphyes |
Diphyes colligerum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Cleistosphaeridium |
Cleistosphaeridium ancoriferum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Cleistosphaeridium |
Cleistosphaeridium multispinosum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Cleistosphaeridium |
Cleistosphaeridium polypes
|
Arizona |
Late Cenomanian |
Middle Turonian |
Cyclonephelium |
Cyclonephelium distinctum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Diconodinium |
Diconodinium glabrum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Dinogymnium |
Dinogymnium euclaense
|
Arizona |
Late Cenomanian |
Middle Turonian |
Baltisphaeridium |
Baltisphaeridium admixtum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Baltisphaeridium |
Baltisphaeridium debilispinum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Baltisphaeridium |
Baltisphaeridium turbinatum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Baltisphaeridium |
Baltisphaeridium sp
|
Arizona |
Late Cenomanian |
Middle Turonian |
Micrhystridium |
Micrhystridium inconspicuum
|
Arizona |
Late Cenomanian |
Middle Turonian |
Micrhystridium |
Micrhystridium minutispinum
|
Arizona |
Late Cenomanian |
Middle Turonian |