Alisocysta |
Alisocysta circumtabulata
|
California |
Danian |
|
Eisenackia |
Eisenackia circumtabulata
|
California |
Danian |
|
Elytrocysta |
Elytrocysta druggii
|
California |
Danian |
|
Paragonyaulacysta |
Paragonyaulacysta calloviensis
|
Canada(Arctic) |
Early Callovian |
|
Phallocysta |
Phallocysta eumekes
|
Canada(Arctic) |
Bathonian |
|
Susadinium |
Susadinium scrofoides
|
Canada(Arctic) |
Toarcian |
Bathonian |
Susadinium |
Susadinium scrofoides
|
Canada(Arctic) |
Toarcian |
Bathonian |
Dodekovia |
Dodekovia scrofoides
|
Canada(Arctic) |
Toarcian |
Bathonian |
Lunatadinium |
Lunatadinium dissolutum
|
Canada(British Columbia) |
Barremian |
|
Williamsidinium |
Williamsidinium banksianum
|
Canada(NWT) |
Maestrichtian |
|
Mendicodinium |
Mendicodinium caperatum
|
Canada(NWT,Mackenzie) |
Early Albian |
|
Pseudoalterbia |
Pseudoalterbia concinna
|
China(Sinkiang Uighur) |
Turonian |
Santonian |
Lagenadinium |
Lagenadinium callovianum
|
England(Cambridgeshire) |
Middle Callovian |
|
Limbodinium |
Limbodinium absidatum
|
England(Huntingdonshire) |
Early Oxfordian |
|
Dinopterygium |
Dinopterygium absidatum
|
England(Huntingdonshire) |
Early Oxfordian |
|
Cerebrocysta |
Cerebrocysta bartonensis
|
England(Isle of Wight) |
Late Eocene |
|
Gerdiocysta |
Gerdiocysta conopeum
|
England(Isle of Wight) |
Early Oligocene |
|