Genus Passalosphaera
- Species total:
- 2
- Age range:
- 500 - 468.33 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Passalosphaera | Ordovician | Middle Arenigian |
|
| Passalosphaera minuta | Early Arenigian | Early Llanvirnian |
|
Genus Passalosphaera
- Species total:
- 2
- Age range:
- 500 - 468.33 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Passalosphaera | Ordovician | Middle Arenigian |
|
| Passalosphaera minuta | Early Arenigian | Early Llanvirnian |
|