Genus Jacksonosphaera
- Species total:
- 2
- Age range:
- 43 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Jacksonosphaera | Jackson | Jackson |
|
| Jacksonosphaera bacufoveata | Jackson | Jackson |
|
Genus Jacksonosphaera
- Species total:
- 2
- Age range:
- 43 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Jacksonosphaera | Jackson | Jackson |
|
| Jacksonosphaera bacufoveata | Jackson | Jackson |
|