Genus Prismatocystis
- Species total:
- 3
- Age range:
- 174 - 94 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Prismatocystis | Middle Jurassic | Early Cenomanian |
|
| Prismatocystis cylindrica | Late Jurassic | Cenomanian |
|
| Prismatocystis ewingii | Late Aptian | Cenomanian |
|