Micrhystridium |
Micrhystridium flandrianum
|
Nd |
Tarannon |
|
Micrhystridium |
Micrhystridium flexibile
|
Nd |
Early Mississippian |
|
Micrhystridium |
Micrhystridium flexispinosum
|
Nd |
Early Cambrian |
|
Micrhystridium |
Micrhystridium formosum
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium fragile
|
Nd |
Bajocian |
|
Micrhystridium |
Micrhystridium fraseri
|
Nd |
Oligocene |
|
Micrhystridium |
Micrhystridium fucosum
|
Nd |
Late Cretaceous |
|
Micrhystridium |
Micrhystridium geniculatum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium gilsonii
|
Nd |
Holocene |
|
Micrhystridium |
Micrhystridium gogense
|
Nd |
Early Cambrian |
|
Micrhystridium |
Micrhystridium goldwyerense
|
Nd |
Arenigian |
Llanvirnian |
Micrhystridium |
Micrhystridium gordonense
|
Nd |
Middle Siegenian |
Emsian |
Micrhystridium |
Micrhystridium gracile
|
Nd |
Albian |
Early Cenomanian |
Micrhystridium |
Micrhystridium gracile
|
Nd |
Arenigian |
|
Micrhystridium |
Micrhystridium gracile
|
Nd |
Ludlovian |
|
Micrhystridium |
Micrhystridium granocentricum
|
Nd |
Late Llandoverian |
|
Micrhystridium |
Micrhystridium granuliferum
|
Nd |
Wenlockian |
|