Leptodinium |
Leptodinium striatum
|
England(Isle of Wight) |
Santonian |
|
Leptodinium |
Leptodinium tenuicornutum
|
Australia(W.Australia) |
Albian |
|
Litosphaeridium |
Litosphaeridium crassipes
|
England |
Late Cretaceous |
|
Litosphaeridium |
Litosphaeridium flosculus
|
France(Paris Basin) |
Senonian |
|
Litosphaeridium |
Litosphaeridium striatoconum
|
Australia(W.Australia) |
Senonian |
|
Litosphaeridium |
Litosphaeridium truncigerum
|
France(Paris Basin) |
Senonian |
|
Meiourogonyaulax |
Meiourogonyaulax bulloidea
|
Australia(W.Australia) |
Tithonian |
|
Meiourogonyaulax |
Meiourogonyaulax caytonensis
|
England(Yorkshire) |
Early Callovian |
|
Meiourogonyaulax |
Meiourogonyaulax cristulata
|
England(Yorkshire) |
Early Callovian |
|
Meiourogonyaulax |
Meiourogonyaulax decapitata
|
W.Germany |
Bajocian |
|
Meiourogonyaulax |
Meiourogonyaulax superornata
|
W.Germany |
Middle Dogger |
|
Micrhystridium |
Micrhystridium fucosum
|
France(Cher) |
Late Cretaceous |
|
Micrhystridium |
Micrhystridium paulinae
|
France(Poitou) |
Bajocian |
|
Oligosphaeridium |
Oligosphaeridium albertense
|
Canada(Alberta) |
Barremian |
|
Oligosphaeridium |
Oligosphaeridium albertense
|
Canada(Alberta) |
Barremian |
|
Oligosphaeridium |
Oligosphaeridium asterigerum
|
W.Germany(Niedersachsen) |
Hauterivian |
|
Oligosphaeridium |
Oligosphaeridium coelenteratum
|
Kansas |
Early Cretaceous |
|