Genus Polysphaeridium
- Species total:
- 82
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Polysphaeridium microtriainum | Lutetian | Lutetian |
|
| Polysphaeridium marsupium | Early Cretaceous | Early Cretaceous |
|
| Polysphaeridium majus | Late Cretaceous | Early Eocene |
|
| Polysphaeridium lemniscatum | Early Tertiary | Early Tertiary |
|
| Polysphaeridium langii | Middle Rhaetian | Sinemurian |
|
| Polysphaeridium laminaspinosum | Neocomian | Coniacian |
|
| Polysphaeridium inflectospinum | Oligocene | Serravallian |
|
| Polysphaeridium granulosum | Campanian | Maastrichtian |
|
| Polysphaeridium giganteum | Paleocene | Eocene |
|
| Polysphaeridium fucosum | Cretaceous | Maastrichtian |
|
| Polysphaeridium follium | Early Cretaceous | Early Cretaceous |
|
| Polysphaeridium fluctuans | Early Eocene | Middle Eocene |
|
| Polysphaeridium flexuosum | Valanginian | Aptian |
|
| Polysphaeridium fabium | Early Cretaceous | Early Cretaceous |
|
| Polysphaeridium elongatum | Maastrichtian | Maastrichtian |
|
| Polysphaeridium elegantulum | Tertiary | Priabonian |
|
| Polysphaeridium duma | Late Valanginian | Clansayesian |
|