Heibergella |
Heibergella asymmetrica
|
Nd |
Nd |
|
Hemicystodinium |
Hemicystodinium
|
Worldwide |
Eocene |
Pleistocene |
Hemicystodinium |
Hemicystodinium zoharyi
|
Nd |
Nd |
|
Hemiplacophora |
Hemiplacophora
|
Worldwide |
Late Eocene |
|
Hemiplacophora |
Hemiplacophora semilunifera
|
Nd |
Nd |
|
Heslertonia |
Heslertonia
|
Worldwide |
Oxfordian |
Cenomanian |
Heslertonia |
Heslertonia heslertonensis
|
Nd |
Nd |
|
Heteraulacacysta |
Heteraulacacysta
|
Worldwide |
Oxfordian |
Cenomanian |
Heteraulacacysta |
Heteraulacacysta campanula
|
Worldwide |
Nd |
|
Heterosphaeridium |
Heterosphaeridium
|
Worldwide |
Santonian |
Oligocene |
Heterosphaeridium |
Heterosphaeridium conjunctum
|
Nd |
Nd |
|
Hexagonifera |
Hexagonifera
|
Worldwide |
Senonian |
|
Hexagonifera |
Hexagonifera glabra
|
Nd |
Nd |
|
Histiocysta |
Histiocysta
|
Worldwide |
Cenomanian |
|
Histiocysta |
Histiocysta palla
|
Nd |
Nd |
|
Histiophora |
Histiophora
|
Worldwide |
Late Jurassic |
|
Histiophora |
Histiophora ornata
|
Nd |
Nd |
|