Micrhystridium |
Micrhystridium gregarium
|
Nd |
Anisian |
|
Micrhystridium |
Micrhystridium grosjeanii
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium guapum
|
Nd |
Late Siegenian |
Early Emsian |
Micrhystridium |
Micrhystridium guizhouense
sp. nov. |
China |
Sinian |
Early Cambrian |
Micrhystridium |
Micrhystridium hamatum
|
Nd |
Early Ordovician |
|
Micrhystridium |
Micrhystridium helios
|
Nd |
Bajocian |
|
Micrhystridium |
Micrhystridium henryi
|
Nd |
Llanvirnian |
|
Micrhystridium |
Micrhystridium heteracanthum
|
Nd |
Cretaceous |
|
Micrhystridium |
Micrhystridium heteracanthum
|
Belgium |
Tournaisian |
|
Micrhystridium |
Micrhystridium heterospinosum
|
Nd |
Early Cambrian |
|
Micrhystridium |
Micrhystridium heurckii
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium horridulum
|
Nd |
Late Gedinnian |
Late Siegenian |
Micrhystridium |
Micrhystridium hydraferum
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium imitatum
|
Nd |
Ashgillian |
Downtonian |
Micrhystridium |
Micrhystridium inaffectilumium
|
Nd |
Wenlockian |
|
Micrhystridium |
Micrhystridium incertum
|
Nd |
Caradocian |
|
Micrhystridium |
Micrhystridium inconspicuum
|
Nd |
Late Cretaceous |
|