Genus Spinasphaera
- Species total:
- 2
- Age range:
- 65 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Spinasphaera | Paleocene | Paleocene |
|
| Spinasphaera robusta | Paleocene | Paleocene |
|
Genus Spinasphaera
- Species total:
- 2
- Age range:
- 65 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Spinasphaera | Paleocene | Paleocene |
|
| Spinasphaera robusta | Paleocene | Paleocene |
|