Kleithriasphaeridium |
Kleithriasphaeridium fasciatum
|
England |
Ryazanian |
Barremian |
Kleithriasphaeridium |
Kleithriasphaeridium corrugatum
|
England |
Ryazanian |
Barremian |
Kleithriasphaeridium |
Kleithriasphaeridium simplicispinum
|
England |
Hauterivian |
Aptian |
Florentinia |
Florentinia mantellii
|
England |
Barremian |
Turonian |
Florentinia |
Florentinia laciniata
|
England |
Aptian |
Turonian |
Kleithriasphaeridium |
Kleithriasphaeridium loffrense
sp. nov. |
England |
Aptian |
Senonian |
Kleithriasphaeridium |
Kleithriasphaeridium readei
|
England |
Albian |
Senonian |
Florentinia |
Florentinia resex
sp. nov. |
England |
Turonian |
|
Florentinia |
Florentinia clavigera
|
England |
Turonian |
|
Silicisphaera |
Silicisphaera torulosa
sp. nov. |
England |
Turonian |
Senonian |
Silicisphaera |
Silicisphaera ferox
|
England |
Turonian |
Senonian |
Silicisphaera |
Silicisphaera buspina
|
England |
Turonian |
Senonian |
Silicisphaera |
Silicisphaera tridactylites
|
England |
Turonian |
Senonian |
Silicisphaera |
Silicisphaera tenera
sp. nov. |
England |
Senonian |
Maastrichtian |
Silicisphaera |
Silicisphaera ferox
|
England |
Turonian |
Senonian |
Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
England |
Albian |
Senonian |
Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
England |
Albian |
Senonian |