Genus Williamsoniella
- Species total:
- 6
- Age range:
- 195 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Williamsoniella coronata | Jurassic | Jurassic |
|
| Williamsoniella lignieri | Jurassic | Jurassic |
|
| Williamsoniella minima | Dogger | Dogger |
|
| Williamsoniella papillosa | Jurassic | Jurassic |
|
| Williamsoniella sp | Aalenian | Aalenian |
|
| Williamsoniella valdensis | Cretaceous | Cretaceous |
|