Areosphaeridium |
Areosphaeridium diktyoplokum
|
Argentina |
Eocene |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Antarctica |
Eocene |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
W.Germany |
Oligocene |
|
Areosphaeridium |
Areosphaeridium diktyoplokum
|
Bulgaria |
Oligocene |
|
Avellodiniaceae |
Avellodiniaceae
|
Nd |
Nd |
|
Avellodinium |
Avellodinium
|
Worldwide |
Berriasian |
Barremian |
Avellodinium |
Avellodinium falsificum
|
Nd |
Nd |
|
Callaiosphaeridium |
Callaiosphaeridium
|
Worldwide |
Hauterivian |
Senonian |
Callaiosphaeridium |
Callaiosphaeridium asymmetricum
|
France |
Senonian |
|
Callaiosphaeridium |
Callaiosphaeridium asymmetricum
|
England |
Hauterivian |
Middle Barremian |
Callaiosphaeridium |
Callaiosphaeridium asymmetricum
|
England |
Cenomanian |
|
Cannosphaeropsis |
Cannosphaeropsis
|
Worldwide |
Late Jurassic |
Early Oligocene |
Cannosphaeropsis |
Cannosphaeropsis utinensis
|
Australia |
Jurassic |
Cretaceous |
Cannosphaeropsis |
Cannosphaeropsis utinensis
|
USSR(Kazakh SSR) |
Cretaceous |
|
Cannosphaeropsis |
Cannosphaeropsis utinensis
|
France |
Cretaceous |
|
Cannosphaeropsis |
Cannosphaeropsis utinensis
|
Australia |
Cretaceous |
|
Cannosphaeropsis |
Cannosphaeropsis utinensis
|
California |
Danian |
|