Hystrichosphaeridium |
Hystrichosphaeridium vasiformum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium veliferum
|
England |
Late Ordovician |
|
Hystrichosphaeridium |
Hystrichosphaeridium venustum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium verbinense
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium vestitum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium whitei
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium xanthiopyxides
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium xanthiopyxides
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium xanthiopyxides
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium xipheum
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium zoharyi
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium zonale
|
Nd |
Nd |
|
Hystrichosphaerina |
Hystrichosphaerina
|
E.Germany |
Late Barremian |
Turonian |
Hystrichosphaerina |
Hystrichosphaerina schindewolfii
|
Nd |
Nd |
|
Hystrichosphaerina |
Hystrichosphaerina turonica
|
Nd |
Nd |
|
Kalyptea |
Kalyptea diceras
|
Nd |
Nd |
|
Kalyptea |
Kalyptea jurassica
|
Nd |
Nd |
|