Hystrichosphaeridium |
Hystrichosphaeridium erraticum
|
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium ferox
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium flosculus
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium geometricum
|
Belgium |
Ypresian |
|
Hystrichosphaeridium |
Hystrichosphaeridium gotlandicum
|
Baltic |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium heteracanthum
|
Australia(W.Australia) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium hippocrepicum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium horridum
|
France(Paris Basin) |
Late Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium huguoniotii
|
France(Cher) |
Late Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium hystrichoreticulatum
|
USSR(Baltic) |
Early Gothlandian |
|
Hystrichosphaeridium |
Hystrichosphaeridium inconspicuum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium integrum
|
W.Germany(Bavaria) |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium lewisii
|
France |
Late Couvinian |
|
Hystrichosphaeridium |
Hystrichosphaeridium lobospinosum
|
Germany(Rhineland) |
Middle Oligocene |
|
Hystrichosphaeridium |
Hystrichosphaeridium longifurcatum
|
France(Aisne) |
Mesozoic |
Cenozoic |
Hystrichosphaeridium |
Hystrichosphaeridium longispinosoides
|
W.Germany(Bavaria) |
Middle Devonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium longofilum
|
W.Germany |
Middle Oligocene |
|