Micrhystridium |
Micrhystridium microreticulatum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium microspinosum
|
Germany |
Late Permian |
|
Micrhystridium |
Micrhystridium minimum
|
USSR(Estonian SSR) |
Middle Ordovician |
Early Gothlandian |
Micrhystridium |
Micrhystridium minus
|
Japan |
Oligocene |
|
Micrhystridium |
Micrhystridium minutispinum
|
England |
Early Jurassic |
|
Micrhystridium |
Micrhystridium minutum
|
Norway |
Early Cambrian |
|
Micrhystridium |
Micrhystridium minutum
|
China |
Late Precambrian |
Early Cambrian |
Micrhystridium |
Micrhystridium miserum
|
Japan |
Oligocene |
|
Micrhystridium |
Micrhystridium modestum
|
India(Andhra Pradesh) |
Eocene |
Oligocene |
Micrhystridium |
Micrhystridium morenensis
|
Spain |
Late Cambrian |
Early Ordovician |
Micrhystridium |
Micrhystridium multiangulare
|
Spain |
Late Cambrian |
Early Ordovician |
Micrhystridium |
Micrhystridium multispinosum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium multispinosum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Micrhystridium |
Micrhystridium nannacanthum
|
France |
Silurian |
|
Micrhystridium |
Micrhystridium nanodigitatum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Micrhystridium |
Micrhystridium nanum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium nebulosum
|
Nd |
Nd |
|