Genus Gyalorhethium
- Species total:
- 6
- Age range:
- 570 - 436.67 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Gyalorhethium | Ordovician | Ordovician |
|
| Gyalorhethium angustispinosum | Late Arenigian | Middle Ashgillian |
|
| Gyalorhethium chondrodes | Lasnamagi | Uhaku |
|
| Gyalorhethium sp | Middle Ordovician | Middle Ordovician |
|
| Gyalorhethium sp.A | Early Ashgillian | Middle Ashgillian |
|
| Gyalorhethium spinuliferum | Early Paleozoic | Early Paleozoic |
|