Genus Physalocysta
- Species total:
- 5
- Age range:
- 54.5 - 37.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Physalocysta | Early Eocene | Middle Eocene |
|
| Physalocysta oblongata | Middle Eocene | Late Eocene |
|
| Physalocysta quadrata | Middle Eocene | Late Eocene |
|
| Physalocysta rotunda | Early Eocene | Middle Eocene |
|
| Physalocysta simplex | Middle Eocene | Late Eocene |
|