Cymbosphaeridium |
Cymbosphaeridium gueltaense
|
Nd |
Ludlovian |
|
Cymbosphaeridium |
Cymbosphaeridium pilar
|
Nd |
Ludlovian |
|
Cymbosphaeridium |
Cymbosphaeridium pilar
|
Nd |
Ludlovian |
|
Cymbosphaeridium |
Cymbosphaeridium pilar
|
Nd |
Silurian |
|
Cymbosphaeridium |
Cymbosphaeridium pilar
|
Nd |
Early Gedinnian |
|
Cymbosphaeridium |
Cymbosphaeridium pilaroides
|
Nd |
Early Gedinnian |
|
Cymbosphaeridium |
Cymbosphaeridium ravum
|
Nd |
Wenlockian |
|
Cyratosphaerina |
Cyratosphaerina
|
Nd |
Nd |
|
Cystidiopsis |
Cystidiopsis
|
Nd |
Nd |
|
Cystidiopsis |
Cystidiopsis certa
|
Nd |
Middle Miocene |
|
Dactylofusa |
Dactylofusa
|
Nd |
Nd |
|
Dactylofusa |
Dactylofusa ampulliformis
|
Belgium |
Silurian |
|
Dactylofusa |
Dactylofusa analota
|
Oklahoma |
Ashgillian |
|
Dactylofusa |
Dactylofusa arabicae
|
Nd |
Nd |
|
Dactylofusa |
Dactylofusa arenacea
|
Argentina(San Juan) |
Ludlovian |
|
Dactylofusa |
Dactylofusa blanca
|
Nd |
Ludlovian |
Early Gedinnian |
Dactylofusa |
Dactylofusa cabottii
|
New York |
Late Llandoverian |
|