Genus Pyritonema
- Species total:
- 4
- Age range:
- 478.33 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Pyritonema delicata | Late Ordovician | Late Ordovician |
|
| Pyritonema fasciculus | Late Ordovician | Late Ordovician |
|
| Pyritonema minuta | Middle Ordovician | Middle Ordovician |
|
| Pyritonema subulare | Late Ordovician | Late Ordovician |
|