Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
England |
Early Aptian |
Paleocene |
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
England |
Valanginian |
Early Albian |
Hystrichosphaeropsis |
Hystrichosphaeropsis obscura
|
Nd |
Nd |
|
Hystrichosphaeropsis |
Hystrichosphaeropsis ovum
|
England |
Late Turonian |
Middle Maestrichtian |
Hystrichosphaeropsis |
Hystrichosphaeropsis variabilis
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium
|
Nd |
Nd |
|
Impagidinium |
Impagidinium aculeatum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium alectrolophum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium dispertitum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium japonicum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium pallidum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium paradoxum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium patulum
|
Europe |
Late Burdigalian |
Recent |
Impagidinium |
Impagidinium sphaericum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium strialatum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium velorum
|
Nd |
Nd |
|
Impletosphaeridium |
Impletosphaeridium
|
Nd |
Nd |
|