Chytroeisphaeridia |
Chytroeisphaeridia pocockii
|
Nd |
Callovian |
|
Chytroeisphaeridia |
Chytroeisphaeridia reticulata
|
Nd |
Campanian |
Maastrichtian |
Chytroeisphaeridia |
Chytroeisphaeridia scabrata
|
Nd |
Late Bajocian |
|
Chytroeisphaeridia |
Chytroeisphaeridia simplicia
|
Nd |
Recent |
|
Chytroeisphaeridia |
Chytroeisphaeridia variabilis
|
Nd |
Late Bajocian |
|
Circulodinium |
Circulodinium deflandrei
|
Nd |
Nd |
|
Circulodinium |
Circulodinium hirtellum
|
Nd |
Nd |
|
Cirrifera |
Cirrifera unilateralis
|
Nd |
Late Albian |
Cenomanian |
Cladopyxidium |
Cladopyxidium septatum
|
Nd |
Paleocene |
|
Clathroctenocystis |
Clathroctenocystis elegans
|
Nd |
Valanginian |
Early Hauterivian |
Cleistosphaeridium |
Cleistosphaeridium aciculare
|
Nd |
Cenomanian |
|
Cleistosphaeridium |
Cleistosphaeridium actinocoronatum
|
Nd |
Middle Oligocene |
Late Oligocene |
Cleistosphaeridium |
Cleistosphaeridium ancoriferum
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium armatum
|
Nd |
Senonian |
|
Cleistosphaeridium |
Cleistosphaeridium ashdodense
|
Nd |
Nd |
|
Cleistosphaeridium |
Cleistosphaeridium bergmannii
|
Nd |
Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium danicum
|
Nd |
Paleocene |
|