Hystrichosphaera |
Hystrichosphaera borussica
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera buccina
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera bulbosa
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera ceratioides
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaera |
Hystrichosphaera cingulatus
|
Australia(W.Australia) |
Cenomanian |
|
Hystrichosphaera |
Hystrichosphaera cingulatus
|
England(Isle of Wight) |
Cenomanian |
|
Hystrichosphaera |
Hystrichosphaera cingulatus
|
England(Surrey) |
Cenomanian |
|
Hystrichosphaera |
Hystrichosphaera cingulatus
|
England(Isle of Wight) |
Late Cenomanian |
Early Turonian |
Hystrichosphaera |
Hystrichosphaera cingulatus
|
Australia(W.Australia) |
Paleocene |
|
Hystrichosphaera |
Hystrichosphaera cingulatus
|
England(Isle of Wight) |
Cenomanian |
|
Hystrichosphaera |
Hystrichosphaera cornuta
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera cornuta
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera cornuta
|
England(Kent) |
Ypresian |
|
Hystrichosphaera |
Hystrichosphaera cristata
|
Belgium |
Maastrichtian |
|
Hystrichosphaera |
Hystrichosphaera cruciata
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera dentata
|
W.Germany(Niedersachsen) |
Late Hauterivian |
|
Hystrichosphaera |
Hystrichosphaera furcata
|
Nd |
Nd |
|