Palaeostomocystis |
Palaeostomocystis triquetra
|
Canada(NWT,Mackenzie) |
Barremian |
|
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
E.Germany |
Late Barremian |
Turonian |
Polystephanephorus |
Polystephanephorus schindewolfii
|
E.Germany |
Late Barremian |
Turonian |
Hystrichosphaerina |
Hystrichosphaerina turonica
|
E.Germany |
Turonian |
|
Polystephanephorus |
Polystephanephorus turonica
|
E.Germany |
Turonian |
|
Pterodinium |
Pterodinium striatum
|
England(Isle of Wight) |
Santonian |
|
Gonyaulacysta |
Gonyaulacysta striata
|
England(Isle of Wight) |
Santonian |
|
Disphaeria |
Disphaeria defloccata
|
France |
Vraconian |
|
Hexagonifera |
Hexagonifera defloccata
|
France |
Vraconian |
|
Micrhystridium |
Micrhystridium ambiguum
|
France(Paris Basin) |
Senonian |
|
Polysphaeridium |
Polysphaeridium ambiguum
|
France(Paris Basin) |
Senonian |
|
Pervosphaeridium |
Pervosphaeridium pseudhystrichodinium
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium pseudhystrichodinium
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium truncigerum
|
France(Paris Basin) |
Senonian |
|
Pervosphaeridium |
Pervosphaeridium truncigerum
|
France(Paris Basin) |
Senonian |
|
Palaeostomocystis |
Palaeostomocystis acambra
|
India(Assam) |
Late Cretaceous |
|
Fromea |
Fromea acambra
|
India(Assam) |
Late Cretaceous |
|