Hafniasphaera |
Hafniasphaera cryptovesiculata
|
Denmark |
Danian |
|
Hafniasphaera |
Hafniasphaera fluens
|
Denmark |
Late Maestrichtian |
Danian |
Hafniasphaera |
Hafniasphaera goodmanii
|
Maryland |
Early Eocene |
|
Hafniasphaera |
Hafniasphaera graciosa
|
Denmark |
Danian |
|
Hafniasphaera |
Hafniasphaera hyalospinosa
|
Denmark |
Danian |
|
Hafniasphaera |
Hafniasphaera septata
|
Australia(Victoria) |
Late Paleocene |
|
Hapsocysta |
Hapsocysta
|
Australia(W.Australia) |
Aptian |
Cenomanian |
Hemisphaeridium |
Hemisphaeridium
|
England(Hampshire) |
Eocene |
|
Holmwoodinium |
Holmwoodinium
|
England(Sussex) |
Late Barremian |
|
Hurunuia |
Hurunuia
|
New Zealand(S.I.) |
Early Tithonian |
|
Hystrichostrogylon |
Hystrichostrogylon
|
Nd |
Nd |
|
Hystrichostrogylon |
Hystrichostrogylon stolidotum
|
England(Yorkshire) |
Middle Barremian |
|
Ifecysta |
Ifecysta
|
Nigeria |
Late Paleocene |
Early Eocene |
Invertocysta |
Invertocysta
|
Atlantic Ocean |
Middle Miocene |
Late Miocene |
Isthmocystis |
Isthmocystis
|
England(Yorkshire) |
Nd |
|
Kaiwaradinium |
Kaiwaradinium
|
New Zealand(S.I.) |
Early Tithonian |
|
Kiokansium |
Kiokansium
|
Nd |
Nd |
|