Amphorosphaeridium |
Amphorosphaeridium
|
Worldwide |
Campanian |
Maastrichtian |
Amphorosphaeridium |
Amphorosphaeridium fenestratum
|
Nd |
Nd |
|
Amphorula |
Amphorula
|
Worldwide |
Tithonian |
|
Amphorula |
Amphorula metaelliptica
|
Nd |
Nd |
|
Andalusiella |
Andalusiella
|
Worldwide |
Senonian |
Paleocene |
Andalusiella |
Andalusiella mauthei
|
Nd |
Nd |
|
Anthosphaeridium |
Anthosphaeridium
|
Worldwide |
Santonian |
Early Campanian |
Anthosphaeridium |
Anthosphaeridium convolvuloides
|
Nd |
Nd |
|
Apectodinium |
Apectodinium
|
Worldwide |
Paleocene |
Eocene |
Apectodinium |
Apectodinium homomorphum
|
Nd |
Nd |
|
Apectodinium |
Apectodinium paniculatum
|
Nd |
Nd |
|
Aprobolocysta |
Aprobolocysta
|
Worldwide |
Valanginian |
Hauterivian |
Aprobolocysta |
Aprobolocysta eilema
|
Nd |
Nd |
|
Aptea |
Aptea
|
Worldwide |
Early Cretaceous |
|
Aptea |
Aptea anaphrissa
|
Nd |
Nd |
|
Aptea |
Aptea polymorpha
|
Nd |
Nd |
|
Apteodinium |
Apteodinium
|
Worldwide |
Late Jurassic |
Early Tertiary |