Genus Neonorthidium
- Species total:
- 2
- Age range:
- 68.5 - 63.9 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Neonorthidium | Late Maastrichtian | Late Maastrichtian |
|
| Neonorthidium perforatum | Maastrichtian | Early Danian |
|
Genus Neonorthidium
- Species total:
- 2
- Age range:
- 68.5 - 63.9 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Neonorthidium | Late Maastrichtian | Late Maastrichtian |
|
| Neonorthidium perforatum | Maastrichtian | Early Danian |
|