Genus Cirrusphaera
- Species total:
- 3
- Age range:
- 141 - 117 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Cirrusphaera sp | Late Valanginian | Hauterivian |
|
| Cirrusphaera dissimilis | Berriasian | Late Berriasian |
|
| Cirrusphaera | Middle Berriasian | Middle Berriasian |
|