Hystrichosphaeridium |
Hystrichosphaeridium polytrichum
|
France(Vienne) |
Bathonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium pseudhystrichodinium
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium rhabdophorum
|
France(Cher) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium spiralisetum
|
Netherlands |
Maastrichtian |
|
Hystrichosphaeridium |
Hystrichosphaeridium striatoconum
|
Australia(W.Australia) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium tiara
|
W.Germany(Schleswig) |
Middle Eocene |
Late Eocene |
Hystrichosphaeridium |
Hystrichosphaeridium tribrachiosum
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium truncigerum
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium xanthiopyxides
|
France(Paris Basin) |
Senonian |
|
Leptodinium |
Leptodinium
|
Germany(Bavaria) |
Early Kimmeridgian |
|
Leptodinium |
Leptodinium aceras
|
W.Germany(Schleswig) |
Early Cretaceous |
|
Leptodinium |
Leptodinium aculeatum
|
Caribbean |
Pleistocene |
Recent |
Leptodinium |
Leptodinium alectrolophum
|
England |
Early Cretaceous |
|
Leptodinium |
Leptodinium amabilis
|
France(Jura) |
Kimmeridgian |
|
Leptodinium |
Leptodinium arcuatum
|
Germany |
Late Jurassic |
|
Leptodinium |
Leptodinium clathratum
|
Australia(W.Australia) |
Tithonian |
|
Leptodinium |
Leptodinium crassinervum
|
France(Jura) |
Kimmeridgian |
|