Hystrichosphaera |
Hystrichosphaera sergipensis
|
Brazil |
Early Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium alagoense
|
Brazil |
Middle Eocene |
Miocene |
Hystrichosphaeridium |
Hystrichosphaeridium amalthei
|
Germany |
Liassic |
|
Hystrichosphaeridium |
Hystrichosphaeridium aracajuense
|
Brazil |
Paleocene |
Early Eocene |
Hystrichosphaeridium |
Hystrichosphaeridium caiobense
|
Brazil |
Paleocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium caminuspinum
|
England(Dorset) |
Early Sinemurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium centrocarpum
|
India(Assam) |
Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium deflandrei
|
France(Vienne) |
Bathonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium espiritosantense
|
Brazil |
Middle Maastrichtian |
|
Hystrichosphaeridium |
Hystrichosphaeridium flosculus
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium irregulare
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium langii
|
England(Dorset) |
Hettangian |
Early Sinemurian |
Hystrichosphaeridium |
Hystrichosphaeridium majus
|
Belgium |
Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium maranhense
|
Brazil |
Middle Albian |
Cenomanian |
Hystrichosphaeridium |
Hystrichosphaeridium palmatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium paradoxum
|
W.Germany(Hesse) |
Late Oligocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium paraense
|
Nd |
Nd |
|