Cirrifera |
Cirrifera unilateralis
|
Nd |
Late Albian |
Cenomanian |
Clavaticystis |
Clavaticystis
|
Nd |
Nd |
|
Clavaticystis |
Clavaticystis bulbis
|
Nd |
Early Cenomanian |
|
Clavaticystis |
Clavaticystis coronis
|
Nd |
Early Cenomanian |
|
Clavaticystis |
Clavaticystis geminitis
|
Nd |
Late Hauterivian |
|
Clavaticystis |
Clavaticystis schopfi
|
Nd |
Late Hauterivian |
|
Cleistosphaeridium |
Cleistosphaeridium
|
England(Isle of Wight) |
Early Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium oligacanthum
|
Nd |
Danian |
|
Cleistosphaeridium |
Cleistosphaeridium oligacanthum
|
Nd |
Paleocene |
|
Cleithronetrum |
Cleithronetrum
|
Nd |
Nd |
|
Cleithronetrum |
Cleithronetrum cancellatum
|
Nd |
Llandeilian |
|
Closteromorpha |
Closteromorpha
|
Nd |
Nd |
|
Collumosphaera |
Collumosphaera
|
Nd |
Nd |
|
Collumosphaera |
Collumosphaera fruticosa
|
Nd |
Late Paleocene |
|
Comasphaeridium |
Comasphaeridium
|
Nd |
Nd |
|
Comasphaeridium |
Comasphaeridium agglutinatum
|
Nd |
Early Cambrian |
|
Comasphaeridium |
Comasphaeridium apodasmios
|
Nd |
Late Devonian |
|