Hystrichosphaeridium |
Hystrichosphaeridium phoenix
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |
Hystrichosphaeridium |
Hystrichosphaeridium pterophorum
|
France(Normandie) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium recurvatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium rhabdophorum
|
France(Cher) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium salvadorense
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium sergipense
|
Brazil |
Early Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium speciale
sp. nov. |
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium zoharyi
|
Nd |
Nd |
|
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
Nd |
Nd |
|
Hystrichosphaerina |
Hystrichosphaerina varians
|
New Jersey |
Campanian |
|
Hystrichosphaeropsis |
Hystrichosphaeropsis downiei
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium tricornoides
|
E.Germany |
Late Hauterivian |
|
Impagidinium |
Impagidinium aculeatum
|
Caribbean |
Quaternary |
|
Impagidinium |
Impagidinium cristatum
|
New Jersey |
Campanian |
Maastrichtian |
Impagidinium |
Impagidinium multiplexum
|
England(Norfolk) |
Early Pleistocene |
|
Impagidinium |
Impagidinium sphaericum
|
Caribbean |
Quaternary |
|
Isabelidinium |
Isabelidinium spasicum
|
USSR(Carpathians) |
Late Cretaceous |
|