Micrhystridium |
Micrhystridium bigotii
|
France(Calvados) |
Late Bajocian |
|
Micrhystridium |
Micrhystridium campoae
|
Belgium |
Tournaisian |
|
Micrhystridium |
Micrhystridium camptum
|
Ohio |
Late Devonian |
Early Mississippian |
Micrhystridium |
Micrhystridium camptum
|
Ohio |
Late Devonian |
Early Mississippian |
Micrhystridium |
Micrhystridium elongatum
|
Ohio |
Late Devonian |
Early Mississippian |
Micrhystridium |
Micrhystridium gracile
|
Argentina(Santiago) |
Late Gothlandian |
|
Micrhystridium |
Micrhystridium lappum
|
Ohio |
Famennian |
|
Micrhystridium |
Micrhystridium leptodermum
|
Ohio |
Famennian |
|
Micrhystridium |
Micrhystridium levibrachium
|
Ohio |
Famennian |
|
Micrhystridium |
Micrhystridium octospinosum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium pandum
|
Ohio |
Famennian |
|
Micrhystridium |
Micrhystridium rectangulare
|
Belgium |
Frasnian |
|
Micrhystridium |
Micrhystridium sedecimspinosum
|
Canada(Alberta) |
Late Devonian |
|
Micrhystridium |
Micrhystridium simplex
|
Ohio |
Late Devonian |
Early Mississippian |
Micrhystridium |
Micrhystridium simplex
|
Ohio |
Tournaisian |
|
Micrhystridium |
Micrhystridium vulgare
|
Belgium |
Frasnian |
|
Multiplicisphaeridium |
Multiplicisphaeridium
|
Ohio |
Late Devonian |
Early Mississippian |