Subtilisphaera |
Subtilisphaera perlucida
|
England(Yorkshire) |
Late Barremian |
|
Subtilisphaera |
Subtilisphaera perlucida
|
England(Norfolk) |
Late Barremian |
|
Subtilisphaera |
Subtilisphaera perlucida
|
England(Lincolnshire) |
Barremian |
|
Subtilisphaera |
Subtilisphaera perlucida
|
England(Surrey) |
Late Barremian |
|
Subtilisphaera |
Subtilisphaera terrula
|
W.Germany(Niedersachsen) |
Late Hauterivian |
Barremian |
Subtilisphaera |
Subtilisphaera terrula
|
England(Yorkshire) |
Late Hauterivian |
Early Barremian |
Subtilisphaera |
Subtilisphaera terrula
|
England(Norfolk) |
Hauterivian |
Barremian |
Systematophora |
Systematophora sp
|
England(Surrey) |
Late Barremian |
|
Tanyosphaeridium |
Tanyosphaeridium sp
|
W.Germany(Niedersachsen) |
Late Hauterivian |
Barremian |
Tanyosphaeridium |
Tanyosphaeridium sp
|
England(Yorkshire) |
Late Hauterivian |
Barremian |
Tanyosphaeridium |
Tanyosphaeridium sp
|
England(Norfolk) |
Hauterivian |
Barremian |
Tanyosphaeridium |
Tanyosphaeridium sp
|
England(Lincolnshire) |
Hauterivian |
Barremian |
Trabeculidium |
Trabeculidium quinquetrum
|
W.Germany(Niedersachsen) |
Late Barremian |
|
Trabeculidium |
Trabeculidium quinquetrum
|
England(Yorkshire) |
Late Barremian |
|
Trabeculidium |
Trabeculidium quinquetrum
|
England(Lincolnshire) |
Late Barremian |
|
Trichodinium |
Trichodinium calvum
sp. nov. |
W.Germany(Niedersachsen) |
Late Barremian |
|
Trichodinium |
Trichodinium calvum
|
England(Yorkshire) |
Late Barremian |
|