Cleistosphaeridium |
Cleistosphaeridium disjunctum
|
Nd |
Early Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium diversispinosum
|
Nd |
Early Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium echinoides
|
Nd |
Oligocene |
|
Cleistosphaeridium |
Cleistosphaeridium ehrenbergii
|
Nd |
Oxfordian |
|
Cleistosphaeridium |
Cleistosphaeridium flexuosum
|
Nd |
Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium heteracanthum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium huguoniotii
|
Nd |
Late Cretaceous |
|
Cleistosphaeridium |
Cleistosphaeridium huguoniotii
sp. nov. |
Nd |
Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium huguoniotii
sp. nov. |
Nd |
Cenomanian |
Cenomanian |
Cleistosphaeridium |
Cleistosphaeridium leve
|
Nd |
Oligocene |
Miocene |
Cleistosphaeridium |
Cleistosphaeridium lumectum
|
Nd |
Late Oxfordian |
|
Cleistosphaeridium |
Cleistosphaeridium multifurcatum
|
Nd |
Late Cretaceous |
|
Cleistosphaeridium |
Cleistosphaeridium multispinosum
|
Nd |
Middle Albian |
Early Cenomanian |
Cleistosphaeridium |
Cleistosphaeridium oligacanthum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium oligacanthum
|
Nd |
Paleocene |
|
Cleistosphaeridium |
Cleistosphaeridium oligacanthum
sp. nov. |
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium oligacanthum
sp. nov. |
Nd |
Nd |
|