Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium brevispinosum | Late Cambrian | Late Eocene |
|
| Hystrichosphaeridium nudatum | Ordovician | Ordovician |
|
| Hystrichosphaeridium spinescens | Ordovician | Ordovician |
|
| Hystrichosphaeridium communis | Ordovician | Silurian |
|
| Hystrichosphaeridium cognitum | Ordovician | Middle Ordovician |
|
| Hystrichosphaeridium circumscissum | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium diploporum | Ordovician | Ordovician |
|
| Hystrichosphaeridium hymenoferum | Ordovician | Ordovician |
|
| Hystrichosphaeridium digitatum | Tremadocian | Late Eocene |
|
| Hystrichosphaeridium ordovicum | Ordovician | Ordovician |
|
| Hystrichosphaeridium balticum | Early Ordovician | Late Ordovician |
|
| Hystrichosphaeridium minuta | Ordovician | Silurian |
|
| Hystrichosphaeridium aquitanicum | Tremadocian | Albian |
|
| Hystrichosphaeridium trispinosum | Ordovician | Mississippian |
|
| Hystrichosphaeridium vitile | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium sp. Down.,1958 | Tremadocian | Tremadocian |
|
| Hystrichosphaeridium corollatum | Ordovician | Ordovician |
|