Hystrichosphaera |
Hystrichosphaera tenuicapillata
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera tenuicapillata
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera tertiaria
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera tubifera
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera wetzelii
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera xanthiopyxides
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium aculeatum
|
USSR(Pre-Baltic) |
Early Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium albertense
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium alcicornu
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium ancoriferum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium annulatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium anthophorum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium anthophorum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium apiculatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium aquitanicum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium armatum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium arrectum
|
Nd |
Nd |
|