| Name | From | To | Age range |
|---|---|---|---|
| Polychaetaspis gadomskae | Middle Ordovician | Late Ashgillian |
|
| Polychaetaspis cooperi | Devonian | Devonian |
|
| Polychaetaspis aequilateralis | Silurian | Late Gothlandian |
|
| Polychaetaspis | Ordovician | Silurian |
|