Reticulatosphaera |
Reticulatosphaera stellata
|
Japan(Sea of Japan) |
Pliocene |
|
Reutlingia |
Reutlingia gochtii
|
W.Germany(Baden) |
Callovian |
|
Rhiptocorys |
Rhiptocorys veligera
|
France(Paris Basin) |
Cretaceous |
|
Riculacysta |
Riculacysta perforata
|
South Carolina |
Middle Oligocene |
Late Oligocene |
Rigaudella |
Rigaudella aemula
|
France(Calvados) |
Oxfordian |
|
Rigaudella |
Rigaudella aemula
|
France(Calvados) |
Oxfordian |
|
Rigaudella |
Rigaudella aemula
|
Australia(W.Australia) |
Early Callovian |
|
Ripea |
Ripea sussexensis
|
England(Sussex) |
Late Hauterivian |
|
Rosswangia |
Rosswangia simplex
|
W.Germany(Baden) |
Middle Callovian |
|
Scriniocassis |
Scriniocassis priscus
|
W.Germany(Baden) |
Early Aalenian |
|
Scriniodinium |
Scriniodinium galeritum
|
W.Germany(Baden) |
Middle Oxfordian |
|
Scriniodinium |
Scriniodinium galeritum
|
France(Calvados) |
Early Oxfordian |
|
Scriniodinium |
Scriniodinium galeritum
|
France(Calvados) |
Early Oxfordian |
|
Scriniodinium |
Scriniodinium galeritum
|
Germany |
Middle Oxfordian |
|
Sentusidinium |
Sentusidinium rioultii
|
France(Normandie) |
Late Callovian |
|
Sirmiodiniopsis |
Sirmiodiniopsis orbis
|
England(Yorkshire) |
Callovian |
|
Sirmiodiniopsis |
Sirmiodiniopsis triaperta
|
England(Buckinghamshire) |
Late Callovian |
|