Genus Hydrasperma
- Species total:
- 2
- Age range:
- 345 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hydrasperma sp | Carboniferous | Carboniferous |
|
| Hydrasperma tenuis | Carboniferous | Carboniferous |
|
Genus Hydrasperma
- Species total:
- 2
- Age range:
- 345 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hydrasperma sp | Carboniferous | Carboniferous |
|
| Hydrasperma tenuis | Carboniferous | Carboniferous |
|