Cymososphaeridium |
Cymososphaeridium validum
|
North Sea |
Valanginian |
Hauterivian |
Muderongia |
Muderongia crucis
|
North Sea |
Valanginian |
Early Barremian |
Muderongia |
Muderongia tetracantha
|
North Sea |
Valanginian |
Early Barremian |
Kleithriasphaeridium |
Kleithriasphaeridium corrugatum
|
North Sea |
Late Ryazanian |
Barremian |
Cribroperidinium |
Cribroperidinium cornutum
|
North Sea |
Late Barremian |
|
Ctenidodinium |
Ctenidodinium elegantulum
|
North Sea |
Late Ryazanian |
Early Aptian |
Muderongia |
Muderongia staurota
|
North Sea |
Late Hauterivian |
Early Aptian |
Callaiosphaeridium |
Callaiosphaeridium trycherium
|
North Sea |
Late Hauterivian |
Aptian |
Phoberocysta |
Phoberocysta neocomica
|
North Sea |
Late Ryazanian |
Early Aptian |
Hystrichodinium |
Hystrichodinium ramoides
|
North Sea |
Barremian |
|
Carpodinium |
Carpodinium granulatum
|
North Sea |
Late Barremian |
Albian |
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
North Sea |
Valanginian |
Early Albian |
Coronifera |
Coronifera oceanica
|
North Sea |
Late Hauterivian |
Late Cretaceous |
Pseudoceratium |
Pseudoceratium anaphrissum
|
North Sea |
Barremian |
|
Hystrichosphaeridium |
Hystrichosphaeridium arborispinum
|
North Sea |
Hauterivian |
Barremian |
Cerbia |
Cerbia tabulata
|
North Sea |
Late Barremian |
Aptian |
Achomosphaera |
Achomosphaera neptuni
|
North Sea |
Late Ryazanian |
Aptian |