Alterbia |
Alterbia pilosa
|
Nd |
Nd |
|
Alterbia |
Alterbia recticornis
sp. nov. |
USSR(Semipalatinskaya) |
Turonian |
|
Amphidiadema |
Amphidiadema denticulata
|
Nd |
Nd |
|
Amphidiadema |
Amphidiadema nucula
|
Nd |
Nd |
|
Amphorosphaeridium |
Amphorosphaeridium fenestratum
|
Nd |
Nd |
|
Amphorosphaeridium |
Amphorosphaeridium latitubulum
|
Nd |
Nd |
|
Amphorosphaeridium |
Amphorosphaeridium multibrevum
|
Nd |
Nd |
|
Amphorula |
Amphorula metaelliptica
|
Nd |
Nd |
|
Andalusiella |
Andalusiella mauthei
|
Nd |
Nd |
|
Andalusiella |
Andalusiella polymorpha
|
Nd |
Nd |
|
Andalusiella |
Andalusiella rhombohedra
|
Australia(W.Australia) |
Albian |
Cenomanian |
Anthosphaeridium |
Anthosphaeridium convolvuloides
|
Nd |
Nd |
|
Apectodinium |
Apectodinium homomorphum
|
Nd |
Nd |
|
Apectodinium |
Apectodinium hyperacanthum
|
Nd |
Nd |
|
Apectodinium |
Apectodinium paniculatum
|
Nd |
Nd |
|
Apectodinium |
Apectodinium parvum
|
Nd |
Nd |
|
Aptea |
Aptea anaphrissa
|
Nd |
Nd |
|