Nematosphaeropsis |
Nematosphaeropsis balcombiana
|
Caribbean |
Recent |
|
Nematosphaeropsis |
Nematosphaeropsis balcombiana
|
Australia(Victoria) |
Middle Miocene |
|
Nematosphaeropsis |
Nematosphaeropsis velata
|
England(Isle of Wight) |
Senonian |
|
Netrelytron |
Netrelytron jurassicum
|
W.Germany |
Bathonian |
Callovian |
Netrelytron |
Netrelytron jurassicum
|
France |
Jurassic |
|
Netrelytron |
Netrelytron stegastum
|
England(Yorkshire) |
Oxfordian |
|
Netrelytron |
Netrelytron trinetrum
|
England(Yorkshire) |
Middle Barremian |
|
Odontochitina |
Odontochitina athabaskensis
|
Canada(Alberta) |
Barremian |
|
Oligosphaeridium |
Oligosphaeridium albertense
|
Canada |
Late Barremian |
|
Oligosphaeridium |
Oligosphaeridium anthophorum
|
Australia(W.Australia) |
Late Jurassic |
|
Oligosphaeridium |
Oligosphaeridium anthophorum
|
Germany |
Late Aptian |
|
Oligosphaeridium |
Oligosphaeridium anthophorum
|
New Guinea(Papua) |
Aptian |
Albian |
Oligosphaeridium |
Oligosphaeridium asterigerum
|
W.Germany |
Late Hauterivian |
|
Oligosphaeridium |
Oligosphaeridium complex
|
France |
Early Cretaceous |
Late Cretaceous |
Oligosphaeridium |
Oligosphaeridium complex
|
Australia |
Early Cretaceous |
Late Cretaceous |
Oligosphaeridium |
Oligosphaeridium complex
|
England |
Eocene |
|
Oligosphaeridium |
Oligosphaeridium complex
|
England |
Early Cretaceous |
Late Cretaceous |