Alisum |
Alisum parvum
|
Poland |
Oxfordian |
|
Amphorula |
Amphorula metaelliptica
|
Bulgaria |
Late Kimmeridgian |
Portlandian |
Antrosphaera |
Antrosphaera calloviensis
|
England |
Callovian |
|
Apteodinium |
Apteodinium granulatum
|
England |
Kimmeridgian |
|
Apteodinium |
Apteodinium granulatum
|
France |
Kimmeridgian |
|
Apteodinium |
Apteodinium granulatum
|
USSR(Moscow) |
Late Kimmeridgian |
Portlandian |
Apteodinium |
Apteodinium maculatum
|
England |
Kimmeridgian |
|
Apteodinium |
Apteodinium maculatum
|
France |
Kimmeridgian |
|
Areoligera |
Areoligera penicillata
|
Poland |
Oxfordian |
|
Baltisphaeridium |
Baltisphaeridium aculigerum
|
Germany |
Kimmeridgian |
|
Baltisphaeridium |
Baltisphaeridium debilispinum
|
England |
Hettangian |
|
Baltisphaeridium |
Baltisphaeridium debilispinum
|
England |
Sinemurian |
|
Baltisphaeridium |
Baltisphaeridium debilispinum
|
England |
Pliensbachian |
|
Baltisphaeridium |
Baltisphaeridium debilispinum
|
England |
Toarcian |
|
Baltisphaeridium |
Baltisphaeridium delicatum
|
England |
Hettangian |
Sinemurian |
Baltisphaeridium |
Baltisphaeridium delicatum
|
England(Dorset) |
Late Hettangian |
Early Sinemurian |
Baltisphaeridium |
Baltisphaeridium downiei
|
England |
Kimmeridgian |
|