Genus Antrosphaeridium
- Species total:
- 3
- Age range:
- 49 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Antrosphaeridium | Middle Eocene | Middle Eocene |
|
| Antrosphaeridium magnificum | Middle Eocene | Middle Eocene |
|
| Antrosphaeridium sinense | Middle Eocene | Middle Eocene |
|