Hystrichosphaeridium |
Hystrichosphaeridium differtum
|
Nd |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium digitatum
|
Nd |
Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium dignum
|
Nd |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium diploporum
|
Nd |
Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium eisenackianum
|
Nd |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium eisenackianum
|
Nd |
Caradocian |
|
Hystrichosphaeridium |
Hystrichosphaeridium eisenackianum
|
Nd |
Middle Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium eisenackii
|
Nd |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium eoplanctonicum
|
E.Germany(Rostock) |
Late Ludlovian |
|
Hystrichosphaeridium |
Hystrichosphaeridium erraticum
|
Nd |
Late Ludlovian |
|
Hystrichosphaeridium |
Hystrichosphaeridium fimbriatum
|
Nd |
Late Cretaceous |
|
Hystrichosphaeridium |
Hystrichosphaeridium franconium
|
Nd |
Late Givetian |
|
Hystrichosphaeridium |
Hystrichosphaeridium geometricum
|
Nd |
Wenlockian |
|
Hystrichosphaeridium |
Hystrichosphaeridium gotlandicum
|
Nd |
Late Llandoverian |
|
Hystrichosphaeridium |
Hystrichosphaeridium hippocrepicum
|
Nd |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium hirsutoides
|
Nd |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium hirsutoides
|
Nd |
Early Ordovician |
|