Millioudodinium |
Millioudodinium birkelundii
|
Greenland |
Portlandian |
|
Millioudodinium |
Millioudodinium gigas
|
North Sea |
Kimmeridgian |
Portlandian |
Occisucysta |
Occisucysta aculeata
|
Nd |
Nd |
|
Occisucysta |
Occisucysta cornuta
|
Nd |
Nd |
|
Occisucysta |
Occisucysta hollisteri
|
Nd |
Nd |
|
Occisucysta |
Occisucysta paucispina
|
Nd |
Nd |
|
Occisucysta |
Occisucysta speetonensis
|
Nd |
Nd |
|
Occisucysta |
Occisucysta tenuiceras
|
Nd |
Nd |
|
Odontochitinopsis |
Odontochitinopsis incerta
|
Nd |
Nd |
|
Oligosphaeridium |
Oligosphaeridium anthophorum
|
Nd |
Nd |
|
Oligosphaeridium |
Oligosphaeridium porosum
sp. nov. |
India(Madras) |
Early Albian |
|
Oodnadattia |
Oodnadattia alata
|
Nd |
Nd |
|
Oodnadattia |
Oodnadattia pterophora
|
Nd |
Nd |
|
Opaeopsomus |
Opaeopsomus
|
Nd |
Nd |
|
Operculodinium |
Operculodinium centrocarpum
|
India(Assam) |
Eocene |
|
Operculodinium |
Operculodinium spiniferum
|
Nd |
Nd |
|
Palaeohystrichophora |
Palaeohystrichophora brevispinosa
|
Canada(W.Canada) |
Aptian |
|