Adnatosphaeridium |
Adnatosphaeridium apiculatum
|
Europe |
Portlandian |
Ryazanian |
Parvocavatus |
Parvocavatus spinosus
|
Europe |
Portlandian |
Ryazanian |
Hystrichosphaeridium |
Hystrichosphaeridium toryna
|
Europe |
Ryazanian |
|
Thuledinium |
Thuledinium groenlandicum
|
Europe |
Portlandian |
Ryazanian |
Muderongia |
Muderongia simplex
|
Europe |
Portlandian |
Ryazanian |
Occisucysta |
Occisucysta evittii
|
Europe |
Late Ryazanian |
Late Valanginian |
Hystrichosphaeridium |
Hystrichosphaeridium anthophorum
|
Europe |
Barremian |
|
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
Europe |
Barremian |
|
Perisseiasphaeridium |
Perisseiasphaeridium eisenackii
|
Europe |
Barremian |
|