Polysphaeridium |
Polysphaeridium microtriainum
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium pumilum
|
England(Surrey) |
Cenomanian |
|
Polysphaeridium |
Polysphaeridium punctatum
|
Senegal |
Maastrichtian |
|
Polysphaeridium |
Polysphaeridium warrenii
|
Atlantic Coast Offshore |
Berriasian |
Barremian |
Polysphaeridium |
Polysphaeridium williamsii
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium williereae
|
Gabon |
Paleocene |
|
Polysphaeridium |
Polysphaeridium zoharyi
|
Nd |
Nd |
|
Polystephanephorus |
Polystephanephorus anthophorum
|
Nd |
Nd |
|
Polystephanephorus |
Polystephanephorus calathus
|
Nd |
Nd |
|
Polystephanephorus |
Polystephanephorus paracalathus
|
Nd |
Nd |
|
Prolixosphaeridium |
Prolixosphaeridium spissum
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Protoellipsodinium |
Protoellipsodinium spinigerum
|
Nd |
Nd |
|
Psaligonyaulax |
Psaligonyaulax
|
Nd |
Nd |
|
Psaligonyaulax |
Psaligonyaulax deflandrei
|
Nd |
Nd |
|
Pseudoceratium |
Pseudoceratium gochtii
|
Nd |
Nd |
|
Pseudoceratium |
Pseudoceratium hansgochtii
sp. nov. |
Canada(Alberta) |
Late Albian |
Early Cenomanian |
Pterodinium |
Pterodinium cingulatum
|
Nd |
Nd |
|