Hexagonifera |
Hexagonifera vermiculata
|
Nd |
Senonian |
|
Hexasphaera |
Hexasphaera
|
Nd |
Nd |
|
Histiocysta |
Histiocysta palla
|
Nd |
Cenomanian |
|
Histiophora |
Histiophora ornata
|
Nd |
Late Jurassic |
|
Homotryblium |
Homotryblium pallidum
|
Nd |
Early Eocene |
|
Homotryblium |
Homotryblium plectilum
|
Nd |
Oligocene |
|
Homotryblium |
Homotryblium tasmaniense
|
Nd |
Paleocene |
|
Homotryblium |
Homotryblium tenuispinosum
|
Nd |
Early Eocene |
|
Horologinella |
Horologinella apiculata
|
Nd |
Campanian |
|
Horologinella |
Horologinella extrema
|
Nd |
Cenomanian |
|
Horologinella |
Horologinella incurvata
|
Nd |
Early Eocene |
|
Horologinella |
Horologinella lineata
|
Nd |
Aptian |
Albian |
Horologinella |
Horologinella obliqua
|
Nd |
Late Albian |
Cenomanian |
Horologinella |
Horologinella spinosa
|
Nd |
Late Eocene |
|
Hystrichodinium |
Hystrichodinium alatum
|
Nd |
Nd |
|
Hystrichodinium |
Hystrichodinium amphiacanthum
|
Nd |
Late Jurassic |
Neocomian |
Hystrichodinium |
Hystrichodinium compactum
|
Nd |
Valanginian |
|