Genus Palaiosphaeridium
- Species total:
- 7
- Age range:
- 500 - 425 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Palaiosphaeridium | Tremadocian | Tremadocian |
|
| Palaiosphaeridium francinae | Middle Ordovician | Middle Ordovician |
|
| Palaiosphaeridium kamax | Tremadocian | Tremadocian |
|
| Palaiosphaeridium mikrum | Tremadocian | Tremadocian |
|
| Palaiosphaeridium sp | Kosovian | Early Telychian |
|
| Palaiosphaeridium sp. Li,1990 | Arenigian | Arenigian |
|
| Palaiosphaeridium sp.A Turn.,1984 | Soudleyan | Onnian |
|