Micrhystridium |
Micrhystridium penkridgense
|
England |
Early Pleistocene |
|
Micrhystridium |
Micrhystridium pentagonale
|
Belgium |
Silurian |
|
Micrhystridium |
Micrhystridium perleve
|
USSR(Siberia) |
Late Precambrian |
|
Micrhystridium |
Micrhystridium persolatiforme
|
USSR |
Late Devonian |
|
Micrhystridium |
Micrhystridium persolatiforme
|
USSR |
Late Devonian |
|
Micrhystridium |
Micrhystridium persolatiforme
|
USSR |
Late Devonian |
|
Micrhystridium |
Micrhystridium picorricum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium piliferum
|
France |
Late Cretaceous |
|
Micrhystridium |
Micrhystridium piriforme
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium pistillum
|
North America |
Middle Cretaceous |
Late Cretaceous |
Micrhystridium |
Micrhystridium piveteaui
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium placophorum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium platformum
|
North America |
Middle Cretaceous |
Late Cretaceous |
Micrhystridium |
Micrhystridium plurispinum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium polorum
|
New York |
Early Gothlandian |
|
Micrhystridium |
Micrhystridium polyedricum
|
France |
Middle Jurassic |
|
Micrhystridium |
Micrhystridium polyedricum
|
Nd |
Bathonian |
|