Genus Forma-a
- Species total:
- 5
- Age range:
- 369 - 5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Forma-a | Late Oligocene | Miocene |
|
| Forma-a sp | Eifelian | Middle Cenomanian |
|
| Forma-a sp.1 | Late Cretaceous | Late Cretaceous |
|
| Forma-a sp.2 | Maastrichtian | Maastrichtian |
|
| Forma-a sp.3 | Maastrichtian | Maastrichtian |
|