Micrhystridium |
Micrhystridium roquestii
|
Australia(W.Australia) |
Kimmeridgian |
|
Micrhystridium |
Micrhystridium scutospinum
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium sydus
|
England |
Kimmeridgian |
|
Micrhystridium |
Micrhystridium sydus
|
England |
Oxfordian |
|
Micrhystridium |
Micrhystridium sydus
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium sydus
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium sydus
|
France |
Kimmeridgian |
|
Micrhystridium |
Micrhystridium sydus
|
France |
Callovian |
|
Micrhystridium |
Micrhystridium tenuissimum
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium variabile
|
England |
Pliensbachian |
|
Micrhystridium |
Micrhystridium variabile
|
England |
Toarcian |
|
Micrhystridium |
Micrhystridium variabile
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium variabile
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium wattonense
|
England |
Pliensbachian |
|
Micrhystridium |
Micrhystridium wattonense
|
England |
Toarcian |
|
Microdinium |
Microdinium ornatum
|
Germany |
Bajocian |
|
Microdinium |
Microdinium ornatum
|
Germany |
Bathonian |
|