Genus Focusphaera
- Species total:
- 2
- Age range:
- 500 - 461 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Focusphaera | Ordovician | Llanvirnian |
|
| Focusphaera elongata | Arenigian | Llanvirnian |
|
Genus Focusphaera
- Species total:
- 2
- Age range:
- 500 - 461 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Focusphaera | Ordovician | Llanvirnian |
|
| Focusphaera elongata | Arenigian | Llanvirnian |
|