Achomosphaera |
Achomosphaera communis
|
Italy |
Senonian |
|
Achomosphaera |
Achomosphaera cracenospinosa
|
England(Berkshire) |
Ypresian |
|
Achomosphaera |
Achomosphaera microtriaina
|
W.Germany(Schleswig) |
Middle Eocene |
Late Eocene |
Achomosphaera |
Achomosphaera valianta
|
Germany |
Eocene |
|
Amphorosphaeridium |
Amphorosphaeridium multispinosum
|
England(Kent) |
Ypresian |
|
Areoligera |
Areoligera incerta
|
W.Germany(Schleswig) |
Late Eocene |
|
Areosphaeridium |
Areosphaeridium arcuatum
|
Germany |
Eocene |
|
Areosphaeridium |
Areosphaeridium dictyostilum
|
Argentina(Tierra) |
Eocene |
Oligocene |
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Germany |
Eocene |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Germany |
Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium nanus
|
Belgium |
Bartonian |
|
Cleistosphaeridium |
Cleistosphaeridium uncinispinosum
|
Belgium |
Ypresian |
|
Cordosphaeridium |
Cordosphaeridium biarmatum
|
Germany(Rhineland) |
Early Eocene |
|
Cordosphaeridium |
Cordosphaeridium callosum
|
Germany(Rhineland) |
Early Eocene |
|
Cordosphaeridium |
Cordosphaeridium capricornum
|
Australia(Victoria) |
Late Eocene |
|
Cordosphaeridium |
Cordosphaeridium commune
|
Italy |
Senonian |
|
Cordosphaeridium |
Cordosphaeridium cracenospinosum
|
England(Berkshire) |
Ypresian |
|