Genus Polyganthus
- Species total:
- 1
- Age range:
- 371.33 - 368 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Polyganthus costatus | Late Emsian | Early Eifelian |
|
Genus Polyganthus
- Species total:
- 1
- Age range:
- 371.33 - 368 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Polyganthus costatus | Late Emsian | Early Eifelian |
|