Genus Tetrabrachiophora
- Species total:
- 2
- Age range:
- 37.5 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Tetrabrachiophora | Early Oligocene | Early Oligocene |
|
| Tetrabrachiophora natans | Early Oligocene | Early Oligocene |
|