Areosphaeridium |
Areosphaeridium
|
Northern Hemisphere |
Ypresian |
Priabonian |
Areosphaeridium |
Areosphaeridium arcuatum
|
England(Isle of Wight) |
Eocene |
|
Areosphaeridium |
Areosphaeridium arcuatum
|
Southern Hemisphere |
Lutetian |
Rupelian |
Areosphaeridium |
Areosphaeridium argentinense
|
Argentina(Santa Cruz) |
Santonian |
Campanian |
Areosphaeridium |
Areosphaeridium calicigerum
|
Netherlands |
Early Rupelian |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Northern Hemisphere |
Eocene |
Priabonian |
Areosphaeridium |
Areosphaeridium fenestratum
|
England(Isle of Wight) |
Bartonian |
Priabonian |
Areosphaeridium |
Areosphaeridium multicornutum
|
Northern Hemisphere |
Lutetian |
Priabonian |
Areosphaeridium |
Areosphaeridium multicornutum
|
England(Isle of Wight) |
Eocene |
|
Areosphaeridium |
Areosphaeridium polypetellum
|
England(Hampshire) |
Early Lutetian |
|
Areosphaeridium |
Areosphaeridium suggestium
|
Australia(W.Australia) |
Middle Santonian |
Campanian |
Baltisphaeridium |
Baltisphaeridium pectiniforme
|
Northern Hemisphere |
Bartonian |
Chattian |
Baltisphaeridium |
Baltisphaeridium pectiniforme
|
Germany |
Middle Oligocene |
|
Cleistosphaeridium |
Cleistosphaeridium polypetellum
|
England(Hampshire) |
Early Lutetian |
|
Cooksonidium |
Cooksonidium
|
Australia(Victoria) |
Priabonian |
|
Cooksonidium |
Cooksonidium capricornum
|
Australia(Victoria) |
Priabonian |
|
Cordosphaeridium |
Cordosphaeridium capricornum
|
Australia(Victoria) |
Priabonian |
|