Micrhystridium |
Micrhystridium nannacanthum
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium piliferum
|
England |
Kimmeridgian |
|
Micrhystridium |
Micrhystridium piveteaui
|
England |
Oxfordian |
|
Micrhystridium |
Micrhystridium piveteaui
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium piveteaui
|
France |
Callovian |
|
Micrhystridium |
Micrhystridium piveteaui
|
France |
Oxfordian |
|
Micrhystridium |
Micrhystridium polyedricum
|
England |
Kimmeridgian |
|
Micrhystridium |
Micrhystridium polyedricum
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium polyedricum
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium polyedricum
|
France |
Callovian |
|
Micrhystridium |
Micrhystridium polyedricum
|
France |
Oxfordian |
|
Micrhystridium |
Micrhystridium pyramidispinosum
|
Bulgaria |
Late Kimmeridgian |
Portlandian |
Micrhystridium |
Micrhystridium pyramidispinosum
|
USSR |
Late Jurassic |
|
Micrhystridium |
Micrhystridium rarispinosum
|
New Zealand |
Late Jurassic |
|
Micrhystridium |
Micrhystridium rarispinum
|
England |
Pliensbachian |
|
Micrhystridium |
Micrhystridium rarispinum
|
England |
Oxfordian |
|
Micrhystridium |
Micrhystridium rarispinum
|
France |
Callovian |
|