Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium nebulosum | Late Couvinian | Stephanian A |
|
| Hystrichosphaeridium differtum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium robustum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium tuberosum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium eisenackii | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium venustum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium dignum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium integrum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium dichotomospinum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium octospinosum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium spiceum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium hexaster | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium microsaetosum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium layeri | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium truncatum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium brevitrispinosum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium minus | Late Devonian | Early Senonian |
|