Pluriarvalium |
Pluriarvalium osmingtonense
|
Nd |
Nd |
|
Polygonifera |
Polygonifera
|
Worldwide |
Oxfordian |
Kimmeridgian |
Polygonifera |
Polygonifera evittii
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium
|
Worldwide |
Jurassic |
Middle Eocene |
Polysphaeridium |
Polysphaeridium conispinum
|
Nd |
Nd |
|
Polysphaeridium |
Polysphaeridium subtile
|
Nd |
Nd |
|
Polystephanephorus |
Polystephanephorus
|
Worldwide |
Middle Callovian |
Albian |
Polystephanephorus |
Polystephanephorus calathus
|
Worldwide |
Nd |
|
Pontiadinium |
Pontiadinium
|
Worldwide |
Early Pliocene |
|
Pontiadinium |
Pontiadinium inequicornutum
|
Nd |
Nd |
|
Prionodinium |
Prionodinium
|
Worldwide |
Late Neocomian |
|
Prionodinium |
Prionodinium alaskense
|
Nd |
Nd |
|
Prolixosphaeridium |
Prolixosphaeridium
|
Worldwide |
Kimmeridgian |
Senonian |
Prolixosphaeridium |
Prolixosphaeridium parvispinum
|
Nd |
Nd |
|
Protoellipsodinium |
Protoellipsodinium
|
Worldwide |
Aptian |
Albian |
Protoellipsodinium |
Protoellipsodinium spinocristatum
|
Nd |
Nd |
|
Psaligonyaulax |
Psaligonyaulax
|
Worldwide |
Kimmeridgian |
Cenomanian |