Sirmiodinium |
Sirmiodinium grossii
|
USSR(Siberia) |
Early Cretaceous |
|
Sirmiodinium |
Sirmiodinium grossii
|
Europe |
Early Cretaceous |
|
Sirmiodinium |
Sirmiodinium grossii
|
Alaska |
Early Cretaceous |
|
Tubotuberella |
Tubotuberella rhombiformis
|
Canada(Arctic) |
Kimmeridgian |
Tithonian |
Tubotuberella |
Tubotuberella rhombiformis
|
USSR(Russian Platform) |
Kimmeridgian |
Tithonian |
Tubotuberella |
Tubotuberella rhombiformis
|
Denmark |
Kimmeridgian |
Tithonian |
Valensiella |
Valensiella ovulum
|
North America |
Callovian |
Oxfordian |
Valensiella |
Valensiella ovulum
|
Europe |
Callovian |
Oxfordian |
Valensiella |
Valensiella ovulum
|
Canada(Arctic) |
Callovian |
Oxfordian |
Valensiella |
Valensiella ovulum
|
Greenland |
Callovian |
Oxfordian |
Wanaea |
Wanaea digitata
|
North America |
Callovian |
Oxfordian |
Wanaea |
Wanaea digitata
|
Europe |
Callovian |
Oxfordian |
Wanaea |
Wanaea digitata
|
New Guinea |
Callovian |
Oxfordian |
Wanaea |
Wanaea digitata
|
Canada(Arctic) |
Callovian |
Oxfordian |
Wanaea |
Wanaea digitata
|
Greenland |
Callovian |
Oxfordian |
Wanaea |
Wanaea digitata
|
Australia(W.Australia) |
Callovian |
Oxfordian |