Phoberocysta |
Phoberocysta neocomica
|
England(Yorkshire) |
Barremian |
|
Polysphaeridium |
Polysphaeridium laminaspinosum
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |
Polysphaeridium |
Polysphaeridium multispinosum
|
England(Yorkshire) |
Barremian |
|
Polystephanephorus |
Polystephanephorus paracalathus
|
England(Dorset) |
Middle Callovian |
|
Polystephanephorus |
Polystephanephorus sarjeantii
|
France |
Early Kimmeridgian |
|
Polystephanephorus |
Polystephanephorus sarjeantii
|
England |
Early Kimmeridgian |
|
Polystephanosphaera |
Polystephanosphaera calathus
|
England(Yorkshire) |
Early Oxfordian |
|
Prolixosphaeridium |
Prolixosphaeridium deirense
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |
Protoellipsodinium |
Protoellipsodinium clavulus
|
England(Yorkshire) |
Middle Barremian |
|
Protoellipsodinium |
Protoellipsodinium spinosum
|
England(Yorkshire) |
Barremian |
|
Pseudoceratium |
Pseudoceratium pelliferum
|
England(Yorkshire) |
Barremian |
|
Pseudoceratium |
Pseudoceratium pelliferum
|
England(Yorkshire) |
Middle Barremian |
Late Barremian |
Pterodinium |
Pterodinium premnos
sp. nov. |
England(Yorkshire) |
Middle Barremian |
|
Rhombodella |
Rhombodella paucispina
|
England(Yorkshire) |
Middle Barremian |
|
Rhombodella |
Rhombodella paucispina
|
E.Germany |
Albian |
|
Rhombodella |
Rhombodella vesca
sp. nov. |
England(Yorkshire) |
Middle Barremian |
|
Silicisphaera |
Silicisphaera buspina
|
England |
Barremian |
|