Hystrichosphaeridium |
Hystrichosphaeridium rjabininii
|
Nd |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium robustum
|
Nd |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium robustum
|
W.Germany(Bavaria) |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium robustum
|
Nd |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium semanticum
|
Nd |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium seminudum
|
Nd |
Danian |
|
Hystrichosphaeridium |
Hystrichosphaeridium setigerfurcatum
|
Nd |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium sexradiatum
|
Nd |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium sibiricum
|
Nd |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium siluricum
|
Nd |
Ludlovian |
|
Hystrichosphaeridium |
Hystrichosphaeridium spiciferum
|
Nd |
Middle Devonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium spiculare
|
Nd |
Arenigian |
Caradocian |
Hystrichosphaeridium |
Hystrichosphaeridium spiculatum
|
Nd |
Late Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium spinescens
|
Nd |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium staurasteroides
|
Nd |
Wenlockian |
|
Hystrichosphaeridium |
Hystrichosphaeridium stellaeforme
|
Nd |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium stimuliferum
|
Nd |
Late Jurassic |
|