Genus Archaesphaera
- Species total:
- 3
- Age range:
- 435 - 370 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Archaesphaera crassa | Visean | Visean |
|
| Archaesphaera minima | Silurian | Early Devonian |
|
| Archaesphaera sp | Late Frasnian | Late Frasnian |
|