Genus Pachytetras
- Species total:
- 2
- Age range:
- 440 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Pachytetras | Ludfordian | Ludfordian |
|
| Pachytetras rugosa | Ashgillian | Ashgillian |
|
Genus Pachytetras
- Species total:
- 2
- Age range:
- 440 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Pachytetras | Ludfordian | Ludfordian |
|
| Pachytetras rugosa | Ashgillian | Ashgillian |
|