Micrhystridium |
Micrhystridium flandrianum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium fragile
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium heurckii
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium imitatum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium kufferathii
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium lejeunei
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium lobeznum
|
Belgium |
Llandoverian |
Early Wenlockian |
Micrhystridium |
Micrhystridium lobeznum
|
Spain |
Ashgillian |
|
Micrhystridium |
Micrhystridium lobeznum
|
Spain |
Silurian |
|
Micrhystridium |
Micrhystridium lobeznum
|
Spain |
Middle Siegenian |
Late Emsian |
Micrhystridium |
Micrhystridium nannacanthum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium ornatum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium paraguaferum
|
Pennsylvania |
Early Llandoverian |
|
Micrhystridium |
Micrhystridium paraguaferum
|
Georgia |
Tarannon |
|
Micrhystridium |
Micrhystridium paraguaferum
|
Belgium |
Tarannon |
Late Wenlockian |
Micrhystridium |
Micrhystridium paraguaferum
|
Pennsylvania |
Late Llandoverian |
|
Micrhystridium |
Micrhystridium paraguaferum
|
Alabama |
Tarannon |
|