Achilleodinium |
Achilleodinium biformoides
|
Northern Hemisphere |
Ypresian |
Rupelian |
Achomosphaera |
Achomosphaera alcicornu
|
Northern Hemisphere |
Thanetian |
Serravallian |
Achomosphaera |
Achomosphaera andalousiensis
|
Northern Hemisphere |
Serravallian |
Pleistocene |
Achomosphaera |
Achomosphaera neptuni
|
Northern Hemisphere |
Ryazanian |
Aptian |
Adnatosphaeridium |
Adnatosphaeridium multispinosum
|
Northern Hemisphere |
Ypresian |
Bartonian |
Aldorfia |
Aldorfia aldorfensis
|
Northern Hemisphere |
Late Bajocian |
Early Callovian |
Aldorfia |
Aldorfia deflandrei
|
Northern Hemisphere |
Cenomanian |
Campanian |
Alisocysta |
Alisocysta circumtabulata
|
Northern Hemisphere |
Late Campanian |
Early Tertiary |
Alisocysta |
Alisocysta circumtabulata
|
Northern Hemisphere |
Maastrichtian |
Thanetian |
Alisocysta |
Alisocysta margarita
|
Northern Hemisphere |
Danian |
Thanetian |
Alisocysta |
Alisocysta reticulata
|
Northern Hemisphere |
Late Campanian |
Early Tertiary |
Alisocysta |
Alisocysta reticulata
|
Northern Hemisphere |
Maastrichtian |
Thanetian |
Amiculosphaera |
Amiculosphaera umbraculum
|
Northern Hemisphere |
Serravallian |
Late Neogene |
Andalusiella |
Andalusiella sp
|
Northern Hemisphere |
Campanian |
Danian |
Angustidinium |
Angustidinium acribes
|
Northern Hemisphere |
Early Albian |
|
Apectodinium |
Apectodinium augustum
|
Northern Hemisphere |
Thanetian |
|
Apectodinium |
Apectodinium folliculum
|
Nd |
Nd |
|