Genus Palaeohystrichosphaeridium
- Species total:
- 3
- Age range:
- 500 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Palaeohystrichosphaeridium | Ordovician | Ordovician |
|
| Palaeohystrichosphaeridium williereae | Ashgillian | Nd |
|
| Palaeohystrichosphaeridium wimanii | Ashgillian | Llandoverian |
|