Adnatosphaeridium |
Adnatosphaeridium reticulense
|
USA(Atlantic Coast) |
Middle Eocene |
|
Aptea |
Aptea attadalica
|
USA(Atlantic Coast) |
Aptian |
|
Cleistosphaeridium |
Cleistosphaeridium polypes
|
USA(Atlantic Coast) |
Cenomanian |
|
Cordosphaeridium |
Cordosphaeridium truncigerum
|
USA(Atlantic Coast) |
Santonian |
|
Ctenidodinium |
Ctenidodinium elegantulum
|
USA(Atlantic Coast) |
Hauterivian |
|
Ctenidodinium |
Ctenidodinium panneum
|
USA(Atlantic Coast) |
Tithonian |
|
Doidyx |
Doidyx anaphrissa
|
USA(Atlantic Coast) |
Barremian |
|
Gonyaulacysta |
Gonyaulacysta cladophora
|
USA(Atlantic Coast) |
Kimmeridgian |
|
Gonyaulacysta |
Gonyaulacysta filapicata
|
USA(Atlantic Coast) |
Bathonian |
|
Gonyaulacysta |
Gonyaulacysta jurassica
|
USA(Atlantic Coast) |
Oxfordian |
|
Mancodinium |
Mancodinium semitabulatum
|
USA(Atlantic Coast) |
Bajocian |
|
Phoberocysta |
Phoberocysta neocomica
|
USA(Atlantic Coast) |
Berriasian |
|
Spinidinium |
Spinidinium vestitum
|
USA(Atlantic Coast) |
Albian |
|
Surculosphaeridium |
Surculosphaeridium longifurcatum
|
USA(Atlantic Coast) |
Turonian |
|
Trichodinium |
Trichodinium castanea
|
USA(Atlantic Coast) |
Late Campanian |
|
Valensiella |
Valensiella vermiculata
|
USA(Atlantic Coast) |
Callovian |
|