Parvocavatus |
Parvocavatus spinosus
sp. nov. |
England(Yorkshire) |
Berriasian |
|
Phoberocysta |
Phoberocysta neocomica
|
England(Yorkshire) |
Berriasian |
Barremian |
Polysphaeridium |
Polysphaeridium laminaspinosum
|
England(Yorkshire) |
Hauterivian |
Barremian |
Prolixosphaeridium |
Prolixosphaeridium toryna
|
England(Yorkshire) |
Berriasian |
Valanginian |
Protoellipsodinium |
Protoellipsodinium spinosum
|
England(Yorkshire) |
Hauterivian |
Barremian |
Psaligonyaulax |
Psaligonyaulax apatela
|
England(Yorkshire) |
Berriasian |
Valanginian |
Pseudoceratium |
Pseudoceratium pelliferum
|
England(Yorkshire) |
Berriasian |
Barremian |
Sirmiodinium |
Sirmiodinium grossii
|
England(Yorkshire) |
Berriasian |
Barremian |
Speetonia |
Speetonia
|
England(Yorkshire) |
Early Valanginian |
|
Speetonia |
Speetonia delicatula
|
England(Yorkshire) |
Valanginian |
|
Speetonia |
Speetonia delicatula
sp. nov. |
England(Yorkshire) |
Early Valanginian |
|
Spiniferites |
Spiniferites alatus
|
England(Yorkshire) |
Berriasian |
Valanginian |
Spiniferites |
Spiniferites alatus
sp. nov. |
England(Yorkshire) |
Late Berriasian |
Early Valanginian |
Spiniferites |
Spiniferites dentatus
|
England(Yorkshire) |
Hauterivian |
|
Spiniferites |
Spiniferites ramosus
sp. nov. |
England(Yorkshire) |
Valanginian |
|
Spiniferites |
Spiniferites ramosus
|
England(Yorkshire) |
Valanginian |
Barremian |
Spiniferites |
Spiniferites ramosus
|
England(Yorkshire) |
Hauterivian |
Barremian |