Genus Sirius
- Species total:
- 3
- Age range:
- 540 - 490 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Sirius | Middle Cambrian | Middle Cambrian |
|
| Sirius anulosus | Middle Cambrian | Tremadocian |
|
| Sirius punctatus | Middle Cambrian | Middle Cambrian |
|