Genus Protocystis
- Species total:
- 6
- Age range:
- 11.5 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protocystis deflandrei | Tortonian | Tortonian |
|
| Protocystis dogieli | Late Miocene | Late Miocene |
|
| Protocystis fossilis | Tortonian | Tortonian |
|
| Protocystis kamtschaticus | Late Miocene | Late Miocene |
|
| Protocystis strelkovi | Late Miocene | Late Miocene |
|
| Protocystis tortonica | Tortonian | Tortonian |
|