Genus Symmetroprion
- Species total:
- 6
- Age range:
- 493.33 - 395 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Symmetroprion spatiosus | Sheinwoodian | Ludfordian |
|
| Symmetroprion sp.A Kiel.,1966 | Nd | Nd |
|
| Symmetroprion sp.A | Middle Caradocian | Late Ashgillian |
|
| Symmetroprion sp | Late Tremadocian | Late Ludlovian |
|
| Symmetroprion reduplicatus | Silurian | Late Gothlandian |
|
| Symmetroprion | Silurian | Silurian |
|