Genus Bisphaera
- Species total:
- 4
- Age range:
- 1600 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Bisphaera | Early Riphean | Early Riphean |
|
| Bisphaera malevkensis | Visean | Visean |
|
| Bisphaera minima | Late Frasnian | Late Frasnian |
|
| Bisphaera plana | Early Riphean | Early Riphean |
|