Micrhystridium |
Micrhystridium pandum
|
Nd |
Late Devonian |
|
Micrhystridium |
Micrhystridium papillatum
|
Nd |
Early Ordovician |
|
Micrhystridium |
Micrhystridium paraguaferum
|
Nd |
Late Ludlovian |
Emsian |
Micrhystridium |
Micrhystridium parinconspicuum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium parveroquesii
|
Nd |
Tarannon |
|
Micrhystridium |
Micrhystridium parvidumetii
|
Nd |
Westphalian |
|
Micrhystridium |
Micrhystridium parvispinum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium parvispinum
|
Nd |
Middle Triassic |
|
Micrhystridium |
Micrhystridium parvispinum
|
Nd |
Middle Triassic |
|
Micrhystridium |
Micrhystridium parvum
|
Nd |
Tournaisian |
|
Micrhystridium |
Micrhystridium parvum
|
Nd |
Early Cambrian |
|
Micrhystridium |
Micrhystridium pascheri
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium pastielsii
|
Nd |
Frasnian |
|
Micrhystridium |
Micrhystridium patentissimum
|
Nd |
Middle Cambrian |
|
Micrhystridium |
Micrhystridium paucispinum
|
Nd |
Devonian |
|
Micrhystridium |
Micrhystridium paulinae
|
Nd |
Middle Jurassic |
|
Micrhystridium |
Micrhystridium pavimentum
|
Nd |
Silurian |
|