Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium calvum | Middle Clintonian | Late Clintonian |
|
| Hystrichosphaeridium simulatum | Middle Clintonian | Middle Clintonian |
|
| Hystrichosphaeridium group b | Middle Clintonian | Late Clintonian |
|
| Hystrichosphaeridium laevigatum | Wenlockian | Ludlovian |
|
| Hystrichosphaeridium coniferum | Wenlockian | Wenlockian |
|
| Hystrichosphaeridium fucosum | Wenlockian | Wenlockian |
|
| Hystrichosphaeridium toyetae | Ludlovian | Eifelian |
|
| Hystrichosphaeridium siluricum | Early Ludlovian | Early Ludlovian |
|
| Hystrichosphaeridium sp.8 | Devonian | Devonian |
|
| Hystrichosphaeridium lewisii | Devonian | Devonian |
|
| Hystrichosphaeridium huecospinosum | Devonian | Devonian |
|
| Hystrichosphaeridium anomale | Early Devonian | Early Devonian |
|
| Hystrichosphaeridium classicum | Devonian | Devonian |
|
| Hystrichosphaeridium sp.9 | Devonian | Late Neogene |
|
| Hystrichosphaeridium microfurcatum | Siegenian | Siegenian |
|
| Hystrichosphaeridium franconium | Late Lochkovian | Late Lochkovian |
|
| Hystrichosphaeridium spiciferum | Middle Devonian | Middle Devonian |
|