Achomosphaera |
Achomosphaera alcicornu
|
Atlantic Coast Offshore |
Early Eocene |
|
Achomosphaera |
Achomosphaera ramulifera
|
England |
Early Eocene |
|
Adnatosphaeridium |
Adnatosphaeridium caulleryi
|
England |
Callovian |
|
Areoligera |
Areoligera senonensis
|
Atlantic Coast Offshore |
Early Eocene |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Atlantic Coast Offshore |
Late Eocene |
|
Areosphaeridium |
Areosphaeridium multicornutum
|
Atlantic Coast Offshore |
Late Eocene |
|
Belodinium |
Belodinium dysculum
|
Australia(W.Australia) |
Portlandian |
|
Biorbifera |
Biorbifera johnewingii
|
Atlantic Coast Offshore |
Berriasian |
Early Valanginian |
Callaiosphaeridium |
Callaiosphaeridium asymmetricum
|
Atlantic Coast Offshore |
Coniacian |
|
Chiropteridium |
Chiropteridium dispersum
|
Atlantic Coast Offshore |
Oligocene |
|
Cleistosphaeridium |
Cleistosphaeridium polypes
|
Canada(Nova Scotia) |
Albian |
|
Cordosphaeridium |
Cordosphaeridium cantharellus
|
Florida |
Early Miocene |
|
Cordosphaeridium |
Cordosphaeridium gracile
|
Atlantic Coast Offshore |
Early Eocene |
|
Cribroperidinium |
Cribroperidinium orthoceras
|
Atlantic Coast Offshore |
Hauterivian |
|
Ctenidodinium |
Ctenidodinium elegantulum
|
Atlantic Coast Offshore |
Hauterivian |
|
Ctenidodinium |
Ctenidodinium ornatum
|
England |
Oxfordian |
|
Cyclonephelium |
Cyclonephelium attadalicum
|
Atlantic Coast Offshore |
Aptian |
|