Genus Williamsonianthus
- Species total:
- 2
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Williamsonianthus | Keuper | Keuper |
|
| Williamsonianthus keuperianus | Triassic | Triassic |
|
Genus Williamsonianthus
- Species total:
- 2
- Age range:
- 230 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Williamsonianthus | Keuper | Keuper |
|
| Williamsonianthus keuperianus | Triassic | Triassic |
|