Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
England |
Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
Belgium |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
France(Calvados) |
Early Oxfordian |
|
Hystrichosphaeridium |
Hystrichosphaeridium sheppeyense
|
England |
Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium simplicispinum
|
England(Yorkshire) |
Barremian |
|
Hystrichosphaeridium |
Hystrichosphaeridium sp. Goch.,1952
sp. nov. |
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
W.Germany |
Middle Oligocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
W.Germany |
Middle Miocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
Canada(Arctic) |
Late Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
Australia(W.Australia) |
Albian |
Cenomanian |
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
England |
Middle Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellatum
|
California |
Danian |
|
Hystrichosphaeridium |
Hystrichosphaeridium toryna
|
Australia(W.Australia) |
Tithonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium tribrachiosum
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium triradicosum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
Worldwide |
Early Cretaceous |
Pleistocene |
Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
England(Berkshire) |
Eocene |
|