Genus Polysphaeridium
- Species total:
- 82
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Polysphaeridium variabile | Paleocene | Paleocene |
|
| Polysphaeridium lemniscatum | Early Tertiary | Early Tertiary |
|
| Polysphaeridium assamicum | Paleocene | Late Eocene |
|
| Polysphaeridium tianshanense | Paleocene | Paleocene |
|
| Polysphaeridium trompetum | Paleocene | Paleocene |
|
| Polysphaeridium elegantulum | Tertiary | Priabonian |
|
| Polysphaeridium giganteum | Paleocene | Eocene |
|
| Polysphaeridium zoharyi | Paleocene | Holocene |
|
| Polysphaeridium sp. Schu.& Chat.,1976 | Early Landenian | Early Landenian |
|
| Polysphaeridium congregatum | Late Thanetian | Early Pliocene |
|
| Polysphaeridium biformum | Early Eocene | Middle Eocene |
|
| Polysphaeridium pseudocolligerum | Eocene | Early Miocene |
|
| Polysphaeridium fluctuans | Early Eocene | Middle Eocene |
|
| Polysphaeridium belgicum | Eocene | Eocene |
|
| Polysphaeridium ornamentum | Eocene | Eocene |
|
| Polysphaeridium microtriainum | Lutetian | Lutetian |
|
| Polysphaeridium cephalum | Lutetian | Lutetian |
|