Genus Echinocysta
- Species total:
- 4
- Age range:
- 49 - 37.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Echinocysta | Middle Eocene | Late Eocene |
|
| Echinocysta echinoides | Middle Eocene | Late Eocene |
|
| Echinocysta multispinata | Middle Eocene | Late Eocene |
|
| Echinocysta reticuloides | Middle Eocene | Late Eocene |
|