Genus Crassisphaeridium
- Species total:
- 2
- Age range:
- 570 - 345 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Crassisphaeridium | Late Devonian | Late Devonian |
|
| Crassisphaeridium inusitatum | Early Paleozoic | Late Famennian |
|