Oligosphaeridium |
Oligosphaeridium dictyophorum
|
USA(Atlantic Coast) |
Santonian |
|
Ovoidinium |
Ovoidinium ovale
|
USA(Atlantic Coast) |
Vraconian |
Cenomanian |
Palaeohystrichophora |
Palaeohystrichophora infusorioides
|
USA(Atlantic Coast) |
Cenomanian |
Santonian |
Palaeoperidinium |
Palaeoperidinium cretaceum
|
USA(Atlantic Coast) |
Santonian |
|
Polysphaeridium |
Polysphaeridium ambiguum
|
USA(Atlantic Coast) |
Vraconian |
Early Turonian |
Psaligonyaulax |
Psaligonyaulax deflandrei
|
USA(Atlantic Coast) |
Late Cenomanian |
Early Turonian |
Pterospermella |
Pterospermella australiensis
|
USA(Atlantic Coast) |
Santonian |
|
Rottnestia |
Rottnestia borussica
|
USA(Atlantic Coast) |
Santonian |
|
Senoniasphaera |
Senoniasphaera protrusa
|
USA(Atlantic Coast) |
Santonian |
|
Senoniasphaera |
Senoniasphaera rotundata
|
USA(Atlantic Coast) |
Santonian |
|
Spinidinium |
Spinidinium lanterna
|
USA(Atlantic Coast) |
Santonian |
|
Spiniferites |
Spiniferites ancorifer
|
USA(Atlantic Coast) |
Vraconian |
Early Cenomanian |
Spiniferites |
Spiniferites cingulatus
|
USA(Atlantic Coast) |
Vraconian |
Early Turonian |
Spiniferites |
Spiniferites crassipellis
|
USA(Atlantic Coast) |
Vraconian |
Early Turonian |
Spiniferites |
Spiniferites ramosus
|
USA(Atlantic Coast) |
Santonian |
|
Spiniferites |
Spiniferites ramosus
|
USA(Atlantic Coast) |
Vraconian |
Early Turonian |
Subtilisphaera |
Subtilisphaera cheit
|
USA(Atlantic Coast) |
Vraconian |
Cenomanian |