Micrhystridium |
Micrhystridium lymense
sp. nov. |
England |
Liassic |
|
Micrhystridium |
Micrhystridium lymense
sp. nov. |
Wales |
Hettangian |
|
Micrhystridium |
Micrhystridium minutispinum
sp. nov. |
England(Dorset) |
Early Domerian |
|
Micrhystridium |
Micrhystridium minutispinum
sp. nov. |
England(Yorkshire) |
Early Carixian |
|
Micrhystridium |
Micrhystridium nannacanthum
|
England(Dorset) |
Hettangian |
Late Sinemurian |
Micrhystridium |
Micrhystridium rarispinum
|
England |
Nd |
|
Micrhystridium |
Micrhystridium recurvatum
|
England(Dorset) |
Hettangian |
Late Sinemurian |
Micrhystridium |
Micrhystridium stellatum
|
England(Dorset) |
Early Sinemurian |
|
Micrhystridium |
Micrhystridium variabile
|
England(Dorset) |
Carixian |
Toarcian |
Micrhystridium |
Micrhystridium wattonense
sp. nov. |
England(Dorset) |
Domerian |
Late Toarcian |
Monosulcites |
Monosulcites fusiformis
|
England |
Liassic |
|
Monosulcites |
Monosulcites minimus
|
England |
Liassic |
|
Monosulcites |
Monosulcites ovalis
|
England |
Liassic |
|
Monosulcites |
Monosulcites subgranulosus
|
England |
Liassic |
|
Nannoceratopsis |
Nannoceratopsis gracilis
sp. nov. |
England(Yorkshire) |
Early Toarcian |
|
Nannoceratopsis |
Nannoceratopsis gracilis
sp. nov. |
England(Lincolnshire) |
Early Toarcian |
|
Nannoceratopsis |
Nannoceratopsis gracilis
|
England(Dorset) |
Toarcian |
|