Genus Hystrichosphaera
- Species total:
- 88
- Age range:
- 1600 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaera biformis | Late Turonian | Late Turonian |
|
| Hystrichosphaera sp. Dave.et al,1966 | Early Barremian | Early Barremian |
|
| Hystrichosphaera cristata | Maastrichtian | Maastrichtian |
|