Tityrosphaeridium |
Tityrosphaeridium tenuistriatum
|
|
Early Paleocene |
|
Cordosphaeridium |
Cordosphaeridium tenuistriatum
|
|
Early Paleocene |
|
Areosphaeridium |
Areosphaeridium dictyostilum
|
Argentina(Tierra) |
Eocene |
Oligocene |
Hystrichosphaeridium |
Hystrichosphaeridium dictyostilum
|
Argentina(Tierra) |
Eocene |
Oligocene |
Cordosphaeridium |
Cordosphaeridium capricornum
|
Australia(Victoria) |
Late Eocene |
|
Systematophora |
Systematophora capricorna
|
Australia(Victoria) |
Late Eocene |
|
Cleistosphaeridium |
Cleistosphaeridium nanus
|
Belgium |
Bartonian |
|
Cleistosphaeridium |
Cleistosphaeridium uncinispinosum
|
Belgium |
Ypresian |
|
Cordosphaeridium |
Cordosphaeridium uncinispinosum
|
Belgium |
Ypresian |
|
Cordosphaeridium |
Cordosphaeridium microtriainum
|
Belgium |
Bartonian |
|
Emmetrocysta |
Emmetrocysta fibrospinosa
|
England(Berkshire) |
Ypresian |
|
Achomosphaera |
Achomosphaera cracenospinosa
|
England(Berkshire) |
Ypresian |
|
Cordosphaeridium |
Cordosphaeridium fibrospinosum
|
England(Berkshire) |
Ypresian |
|
Cordosphaeridium |
Cordosphaeridium cracenospinosum
|
England(Berkshire) |
Ypresian |
|
Hystrichosphaerina |
Hystrichosphaerina exilimura
|
England(Isle of Wight) |
Ypresian |
|
Cordosphaeridium |
Cordosphaeridium exilimurum
|
England(Isle of Wight) |
Ypresian |
|
Amphorosphaeridium |
Amphorosphaeridium multispinosum
|
England(Kent) |
Ypresian |
|