Hexagonifera |
Hexagonifera vermiculata
|
Nd |
Coniacian |
Campanian |
Histiocysta |
Histiocysta palla
|
Nd |
Cenomanian |
|
Histiophora |
Histiophora ornata
|
Nd |
Kimmeridgian |
|
Homotryblium |
Homotryblium pallidum
|
Nd |
Early Eocene |
|
Homotryblium |
Homotryblium tenuispinosum
|
Nd |
Early Eocene |
|
Hystrichodinium |
Hystrichodinium amphiacanthum
|
Nd |
Kimmeridgian |
Valanginian |
Hystrichodinium |
Hystrichodinium compactum
|
Nd |
Valanginian |
|
Hystrichodinium |
Hystrichodinium dasum
|
Nd |
Cenomanian |
|
Hystrichodinium |
Hystrichodinium furcatum
|
Nd |
Hauterivian |
|
Hystrichodinium |
Hystrichodinium oligacanthum
|
Nd |
Berriasian |
Albian |
Hystrichodinium |
Hystrichodinium parvum
|
Nd |
Late Aptian |
|
Hystrichodinium |
Hystrichodinium pulchrum
|
Nd |
Late Valanginian |
Campanian |
Hystrichodinium |
Hystrichodinium ramoides
|
Nd |
Late Barremian |
|
Hystrichokolpoma |
Hystrichokolpoma biformoides
|
Nd |
Late Eocene |
Early Oligocene |
Hystrichokolpoma |
Hystrichokolpoma cinctum
|
Nd |
Late Eocene |
Late Miocene |
Hystrichokolpoma |
Hystrichokolpoma clavigerum
|
Nd |
Coniacian |
Santonian |
Hystrichokolpoma |
Hystrichokolpoma eisenackii
|
Nd |
Early Eocene |
Early Oligocene |