Genus Collumosphaera
- Species total:
- 3
- Age range:
- 65 - 37.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Collumosphaera | Late Paleocene | Late Paleocene |
|
| Collumosphaera fruticosa | Paleocene | Eocene |
|
| Collumosphaera sp | Paleocene | Paleocene |
|