Genus Hystrichotriangulatum
- Species total:
- 6
- Age range:
- 540 - 446.67 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichotriangulatum | Middle Cambrian | Middle Cambrian |
|
| Hystrichotriangulatum abbreviatum | Llandeilian | Llandeilian |
|
| Hystrichotriangulatum convexum | Early Ordovician | Early Caradocian |
|
| Hystrichotriangulatum lucidylum | Llandeilian | Llandeilian |
|
| Hystrichotriangulatum marginulatum | Llandeilian | Llandeilian |
|
| Hystrichotriangulatum sp | Early Devonian | Early Devonian |
|