Achomosphaera |
Achomosphaera hyperacantha
|
Australia |
Miocene |
|
Achomosphaera |
Achomosphaera ramulifera
|
Australia |
Cenomanian |
Late Paleocene |
Actinotheca |
Actinotheca aphroditae
|
Australia |
Turonian |
|
Adnatosphaeridium |
Adnatosphaeridium aemulum
|
Australia |
Oxfordian |
|
Aiora |
Aiora fenestrata
|
Australia |
Turonian |
Santonian |
Aireiana |
Aireiana verrucosa
|
Australia |
Late Eocene |
|
Amphidiadema |
Amphidiadema denticulata
|
Australia |
Senonian |
|
Aptea |
Aptea polymorpha
|
Australia |
Albian |
|
Apteodinium |
Apteodinium grande
|
Australia |
Albian |
Cenomanian |
Apteodinium |
Apteodinium maculatum
|
Australia |
Albian |
|
Ascodinium |
Ascodinium acrophorum
|
Australia |
Late Albian |
Cenomanian |
Ascodinium |
Ascodinium parvum
|
Australia |
Albian |
Turonian |
Ascodinium |
Ascodinium serratum
|
Australia |
Albian |
Turonian |
Baltisphaeridium |
Baltisphaeridium erectum
|
Australia |
Cenomanian |
|
Baltisphaeridium |
Baltisphaeridium fimbriatum
|
Australia |
Middle Cenomanian |
Late Cenomanian |
Baltisphaeridium |
Baltisphaeridium liniferum
|
Australia |
Late Paleocene |
|
Baltisphaeridium |
Baltisphaeridium nanum
|
Australia |
Late Eocene |
|