Homotryblium |
Homotryblium abbreviatum
|
Nd |
Nd |
|
Homotryblium |
Homotryblium floripes
|
Nd |
Nd |
|
Homotryblium |
Homotryblium plectilum
|
Nd |
Nd |
|
Homotryblium |
Homotryblium tenuispinosum
|
England |
Middle Eocene |
|
Homotryblium |
Homotryblium vallum
|
Nd |
Nd |
|
Hurlandsia |
Hurlandsia rugara
|
Nd |
Nd |
|
Hystrichodinium |
Hystrichodinium furcatum
|
England |
Hauterivian |
Early Barremian |
Hystrichodinium |
Hystrichodinium ramoides
|
England |
Barremian |
|
Hystrichodinium |
Hystrichodinium sp
|
France |
Portlandian |
Cenomanian |
Hystrichokolpoma |
Hystrichokolpoma bulbosum
|
Nd |
Nd |
|
Hystrichokolpoma |
Hystrichokolpoma cinctum
|
Nd |
Nd |
|
Hystrichokolpoma |
Hystrichokolpoma pusillum
|
Nd |
Nd |
|
Hystrichokolpoma |
Hystrichokolpoma rigaudiae
|
USA(Eastern Offshore) |
Oligocene |
|
Hystrichokolpoma |
Hystrichokolpoma truncatum
|
Nd |
Nd |
|
Hystrichosphaera |
Hystrichosphaera
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium
|
Nd |
Nd |
|
Hystrichosphaeridium |
Hystrichosphaeridium salpingophorum
|
USA |
Campanian |
|