Hystrichosphaeridium |
Hystrichosphaeridium truncigerum
|
Nd |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium tubiferum
|
France(Paris Basin) |
Senonian |
|
Hystrichosphaeridium |
Hystrichosphaeridium vestitum
|
Nd |
Jurassic |
|
Hystrichosphaeridium |
Hystrichosphaeridium xanthiopyxides
|
Nd |
Senonian |
|
Lagenochitina |
Lagenochitina
|
Nd |
Ordovician |
Silurian |
Lagenochitina |
Lagenochitina baltica
|
Nd |
Silurian |
|
Lagenochitina |
Lagenochitina sphaerocephala
|
Nd |
Wenlockian |
|
Leiofusa |
Leiofusa
|
Nd |
Silurian |
|
Leiosphaera |
Leiosphaera
|
Nd |
Silurian |
Cretaceous |
Leiosphaera |
Leiosphaera retigera
|
Nd |
Silurian |
|
Membranilarnax |
Membranilarnax
|
Nd |
Jurassic |
Cretaceous |
Membranilarnax |
Membranilarnax ovulum
|
Nd |
Bajocian |
|
Micrhystridium |
Micrhystridium
|
Nd |
Silurian |
Cretaceous |
Micrhystridium |
Micrhystridium bacilliferum
|
Nd |
Visean |
|
Micrhystridium |
Micrhystridium bigotii
|
Nd |
Bajocian |
|
Micrhystridium |
Micrhystridium inconspicuum
|
Nd |
Bajocian |
Senonian |
Micrhystridium |
Micrhystridium piliferum
|
Nd |
Senonian |
|