Micrhystridium |
Micrhystridium rarispinum
|
England |
Oxfordian |
|
Micrhystridium |
Micrhystridium recurvatum
|
France |
Bajocian |
Callovian |
Micrhystridium |
Micrhystridium rhopalicum
|
England |
Oxfordian |
|
Micrhystridium |
Micrhystridium roquestii
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium scutospinum
|
France |
Bathonian |
|
Micrhystridium |
Micrhystridium stellatum
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium stellatum
|
England |
Callovian |
Oxfordian |
Micrhystridium |
Micrhystridium sydus
|
France |
Bajocian |
Bathonian |
Micrhystridium |
Micrhystridium sydus
|
England |
Oxfordian |
|
Micrhystridium |
Micrhystridium tenuissimum
|
France |
Bajocian |
|
Micrhystridium |
Micrhystridium variabile
|
France |
Bajocian |
Bathonian |
Nannoceratopsis |
Nannoceratopsis gracilis
|
Denmark |
Hettangian |
|
Nannoceratopsis |
Nannoceratopsis gracilis
|
Baltic |
Callovian |
|
Nannoceratopsis |
Nannoceratopsis pellucida
|
France |
Early Oxfordian |
|
Nannoceratopsis |
Nannoceratopsis pellucida
|
England |
Oxfordian |
|
Nannoceratopsis |
Nannoceratopsis pellucida
|
Baltic |
Callovian |
|
Nannoceratopsis |
Nannoceratopsis pellucida
|
Australia(W.Australia) |
Oxfordian |
Tithonian |