Genus Gemmastephanoporites
- Species total:
- 3
- Age range:
- 65 - 37.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Gemmastephanoporites breviculus | Eocene | Bartonian |
|
| Gemmastephanoporites polymorphus | Early Eocene | Priabonian |
|
| Gemmastephanoporites | Tertiary | Tertiary |
|