Pervosphaeridium |
Pervosphaeridium truncigerum
|
Northern Hemisphere |
Coniacian |
Early Campanian |
Phallocysta |
Phallocysta eumekes
|
Northern Hemisphere |
Late Pliensbachian |
Aalenian |
Phoberocysta |
Phoberocysta neocomica
|
Northern Hemisphere |
Valanginian |
Early Aptian |
Phthanoperidinium |
Phthanoperidinium sp
|
Northern Hemisphere |
Ypresian |
Chattian |
Polysphaeridium |
Polysphaeridium congregatum
|
Northern Hemisphere |
Bartonian |
Chattian |
Polysphaeridium |
Polysphaeridium zoharyi
|
Northern Hemisphere |
Ypresian |
Recent |
Prolixosphaeridium |
Prolixosphaeridium parvispinum
|
Northern Hemisphere |
Hauterivian |
Cenomanian |
Protoellipsodinium |
Protoellipsodinium sp
|
Northern Hemisphere |
Hauterivian |
Albian |
Psaligonyaulax |
Psaligonyaulax deflandrei
|
Northern Hemisphere |
Late Albian |
Santonian |
Pseudoceratium |
Pseudoceratium pelliferum
|
Northern Hemisphere |
Ryazanian |
Early Albian |
Pseudoceratium |
Pseudoceratium polymorphum
|
Northern Hemisphere |
Aptian |
Albian |
Reticulatosphaera |
Reticulatosphaera actinocoronata
|
Northern Hemisphere |
Rupelian |
Pleistocene |
Reutlingia |
Reutlingia gochtii
|
Northern Hemisphere |
Late Callovian |
|
Rhaetogonyaulax |
Rhaetogonyaulax rhaetica
|
Northern Hemisphere |
Norian |
Early Hettangian |
Rhombodinium |
Rhombodinium draco
|
Northern Hemisphere |
Bartonian |
Rupelian |
Rhombodinium |
Rhombodinium porosum
|
Northern Hemisphere |
Bartonian |
Priabonian |
Rhynchodiniopsis |
Rhynchodiniopsis cladophora
|
Northern Hemisphere |
Bathonian |
Early Kimmeridgian |