Polysphaeridium |
Polysphaeridium follium
|
Kansas |
Albian |
|
Polysphaeridium |
Polysphaeridium marsupium
|
Kansas |
Albian |
|
Polysphaeridium |
Polysphaeridium perovatum
|
Kansas |
Albian |
|
Polysphaeridium |
Polysphaeridium tribrachiosum
|
Kansas |
Albian |
|
Diphyes |
Diphyes monstruosum
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium coelenteratum
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium dispare
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium fabium
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium follium
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium marsupium
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium monstruosum
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium perovatum
|
Kansas |
Albian |
|
Hystrichosphaeridium |
Hystrichosphaeridium tribrachiosum
|
Kansas |
Albian |
|
Cleistosphaeridium |
Cleistosphaeridium spiralisetum
|
Netherlands |
Maastrichtian |
|
Hystrichosphaeridium |
Hystrichosphaeridium spiralisetum
|
Netherlands |
Maastrichtian |
|
Oligosphaeridium |
Oligosphaeridium dictyophorum
|
New Guinea(Papua) |
Late Jurassic |
|
Gonyaulacysta |
Gonyaulacysta perforans
|
New Guinea(Papua) |
Late Jurassic |
|