Hystrichosphaeridium |
Hystrichosphaeridium paulinae
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium penicillatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium perforatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium perovatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium perplexum
|
Nd |
Eocene |
Oligocene |
Hystrichosphaeridium |
Hystrichosphaeridium petilum
|
Nd |
Early Kimmeridgian |
|
Hystrichosphaeridium |
Hystrichosphaeridium pilosum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium placacanthum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium polonicum
|
Nd |
Oxfordian |
|
Hystrichosphaeridium |
Hystrichosphaeridium polyplasium
|
Nd |
Miocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium polytrichum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium protellipticum
|
Nd |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium pseudhystrichodinium
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium pseudorecurvatum
|
Nd |
Early Eocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium pulcherrimum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium radiculatum
|
Nd |
Late Cenomanian |
|
Hystrichosphaeridium |
Hystrichosphaeridium ramuliferum
|
Nd |
Nd |
|