Genus Hammenia
- Species total:
- 6
- Age range:
- 230 - 94 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hammenia | Albian | Albian |
|
| Hammenia fredericksburgensis | Early Triassic | Cenomanian |
|
| Hammenia sp | Early Triassic | Early Cenomanian |
|
| Hammenia sp.A Burg.,1993 | Late Albian | Early Cenomanian |
|
| Hammenia sp.B Burg.,1993 | Late Albian | Late Albian |
|
| Hammenia triangula | Middle Albian | Late Albian |
|