Genus Ulvella
- Species total:
- 5
- Age range:
- 141 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Ulvella lutosa | Eocene | Eocene |
|
| Ulvella microthyrioides | Nd | Nd |
|
| Ulvella nannae | Cretaceous | Paleocene |
|
| Ulvella pertusa | Eocene | Eocene |
|
| Ulvella spinulata | Eocene | Eocene |
|