Batiacasphaera |
Batiacasphaera agglutinata
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Batiacasphaera |
Batiacasphaera agglutinata
|
Australia(Queensland) |
Nd |
|
Batiacasphaera |
Batiacasphaera bellula
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Batiacasphaera |
Batiacasphaera biornata
|
China(Hopei) |
Middle Oligocene |
Early Oligocene |
Batiacasphaera |
Batiacasphaera curiosa
|
Alaska |
Middle Eocene |
Late Eocene |
Batiacasphaera |
Batiacasphaera minor
|
China(Hopei) |
Early Oligocene |
Middle Oligocene |
Batiacasphaera |
Batiacasphaera norvickii
|
Australia(Queensland) |
Aptian |
Albian |
Kallosphaeridium |
Kallosphaeridium
|
Belgium |
Ypresian |
|
Kallosphaeridium |
Kallosphaeridium agglutinatum
|
Canada(NWT,Mackenzie) |
Early Valanginian |
Middle Valanginian |
Kallosphaeridium |
Kallosphaeridium agglutinatum
|
Australia(Queensland) |
Nd |
|
Kallosphaeridium |
Kallosphaeridium biornatum
|
USA(Atlantic Coast) |
Rupelian |
|
Kallosphaeridium |
Kallosphaeridium biparatum
|
Nd |
Nd |
|
Kallosphaeridium |
Kallosphaeridium brevibarbatum
|
Belgium |
Ypresian |
|
Kallosphaeridium |
Kallosphaeridium brevibarbatum
|
North Sea |
Ypresian |
|
Kallosphaeridium |
Kallosphaeridium capulatum
|
USA(Atlantic Coast) |
Chattian |
|
Kallosphaeridium |
Kallosphaeridium coninckii
|
Australia(Queensland) |
Hauterivian |
Albian |
Kallosphaeridium |
Kallosphaeridium coninckii
|
Australia(W.Australia) |
Hauterivian |
Albian |