Heterosphaeridium |
Heterosphaeridium heteracanthum
|
W.Germany |
Aptian |
|
Hystrichosphaera |
Hystrichosphaera pilosa
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium capitatum
|
Australia(W.Australia) |
Oxfordian |
Kimmeridgian |
Hystrichosphaeridium |
Hystrichosphaeridium pilosum
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium exiguum
|
Canada(Arctic) |
Late Kimmeridgian |
Early Albian |
Imbatodinium |
Imbatodinium exiguum
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium exiguum
|
E.Germany |
Late Hauterivian |
|
Imbatodinium |
Imbatodinium gochtii
|
Canada(Arctic) |
Late Kimmeridgian |
Early Albian |
Imbatodinium |
Imbatodinium gochtii
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium gochtii
|
E.Germany |
Valanginian |
Hauterivian |
Imbatodinium |
Imbatodinium imbatodinense
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium jaegeri
|
Canada(Arctic) |
Aptian |
|
Imbatodinium |
Imbatodinium jaegeri
|
W.Germany |
Aptian |
|
Imbatodinium |
Imbatodinium jaegeri
|
Nd |
Nd |
|
Imbatodinium |
Imbatodinium jaegeri
|
E.Germany |
Late Barremian |
|
Imbatodinium |
Imbatodinium kondratjevii
|
Canada(Arctic) |
Late Kimmeridgian |
Early Albian |