Micrhystridium |
Micrhystridium ampliatum
|
China(Hunan) |
Late Sinian |
|
Micrhystridium |
Micrhystridium ampliatum
|
Iowa |
Late Frasnian |
|
Micrhystridium |
Micrhystridium andamanicum
|
Nd |
Oligocene |
|
Micrhystridium |
Micrhystridium andrewsii
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium angustum
|
Nd |
Late Devonian |
|
Micrhystridium |
Micrhystridium antarcticum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium apiculatum
|
Nd |
Cambrian |
|
Micrhystridium |
Micrhystridium arachnoides
|
Nd |
Bathonian |
|
Micrhystridium |
Micrhystridium aremoricanum
sp. nov. |
France |
Llanvirnian |
|
Micrhystridium |
Micrhystridium areolatum
|
Nd |
Kimmeridgian |
|
Micrhystridium |
Micrhystridium argentinum
sp. nov. |
Argentina(Santiago) |
Ludlovian |
|
Micrhystridium |
Micrhystridium ariakense
|
Nd |
Pleistocene |
|
Micrhystridium |
Micrhystridium asagaiense
|
Nd |
Oligocene |
|
Micrhystridium |
Micrhystridium assuetum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium asymmetricum
|
Nd |
Late Devonian |
|
Micrhystridium |
Micrhystridium bacilliferum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium baculiferum
|
Nd |
Miocene |
|