Genus Synsphaeridium
- Species total:
- 41
- Age range:
- 4100 - 163.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Synsphaeridium sp.II | Early Riphean | Kudashian |
|
| Synsphaeridium sp.III | Late Riphean | Vendian |
|
| Synsphaeridium spinosum | Late Ordovician | Middle Devonian |
|
| Synsphaeridium switjasium | Riphean | Cambrian |
|
| Synsphaeridium tenuatum | Late Riphean | Late Riphean |
|
| Synsphaeridium tuberculatum | Middle Ordovician | Early Permian |
|
| Synsphaeridium varium | Ordovician | Ordovician |
|