Genus Tranvikium
- Species total:
- 2
- Age range:
- 500 - 456.67 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Tranvikium | Ordovician | Ordovician |
|
| Tranvikium polygonale | Early Ordovician | Middle Ordovician |
|
Genus Tranvikium
- Species total:
- 2
- Age range:
- 500 - 456.67 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Tranvikium | Ordovician | Ordovician |
|
| Tranvikium polygonale | Early Ordovician | Middle Ordovician |
|