Hystrichosphaeropsis |
Hystrichosphaeropsis irisiae
|
Nd |
Nd |
|
Hystrichosphaeropsis |
Hystrichosphaeropsis obscura
|
Nd |
Nd |
|
Hystrichosphaeropsis |
Hystrichosphaeropsis ovum
|
Nd |
Nd |
|
Hystrichosphaeropsis |
Hystrichosphaeropsis pontiana
|
Romania |
Early Pliocene |
|
Hystrichosphaeropsis |
Hystrichosphaeropsis quasicribrata
|
Nd |
Nd |
|
Hystrichostrogylon |
Hystrichostrogylon
|
Nd |
Nd |
|
Hystrichostrogylon |
Hystrichostrogylon membraniphorum
|
Nd |
Nd |
|
Impagidinium |
Impagidinium
|
Australia(Victoria) |
Late Eocene |
|
Impagidinium |
Impagidinium alectrolophum
|
England(Yorkshire) |
Middle Barremian |
|
Impagidinium |
Impagidinium dispertitum
|
Australia(Victoria) |
Late Eocene |
|
Impagidinium |
Impagidinium elegans
|
Australia(Victoria) |
Late Eocene |
|
Impagidinium |
Impagidinium maculatum
|
Australia(W.Australia) |
Eocene |
|
Impagidinium |
Impagidinium margaritiferum
|
Australia(W.Australia) |
Campanian |
|
Impagidinium |
Impagidinium membranigerum
|
Germany |
Late Oligocene |
|
Impagidinium |
Impagidinium ovum
|
India(Assam) |
Late Cretaceous |
|
Impagidinium |
Impagidinium paradoxum
|
Caribbean |
Middle Miocene |
Holocene |
Impagidinium |
Impagidinium patulum
|
Caribbean |
Middle Miocene |
Holocene |