Genus Tetraniveum
- Species total:
- 6
- Age range:
- 570 - 461 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Tetraniveum | Ordovician | Ordovician |
|
| Tetraniveum arenigum | Early Paleozoic | Llanvirnian |
|
| Tetraniveum sp | Middle Arenigian | Late Arenigian |
|
| Tetraniveum sp.1 | Arenigian | Arenigian |
|
| Tetraniveum sp.A | Late Tremadocian | Early Arenigian |
|
| Tetraniveum sp.B | Late Tremadocian | Early Arenigian |
|