Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium castanea | Late Ordovician | Late Ordovician |
|
| Hystrichosphaeridium malum | Late Ordovician | Late Ordovician |
|
| Hystrichosphaeridium trisulcum | Late Ordovician | Late Ordovician |
|
| Hystrichosphaeridium picorricum | Late Ordovician | Emsian |
|
| Hystrichosphaeridium bipartibilum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium corniformis | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium sectum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium ocuminatum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium lucidum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium reticulatum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium scabridum | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium brevifurcatum | Llanvirnian | Early Homerian |
|
| Hystrichosphaeridium viticulosum | Middle Ordovician | Middle Ordovician |
|
| Hystrichosphaeridium maslovii | Middle Ordovician | Middle Ordovician |
|
| Hystrichosphaeridium sibiricum | Middle Ordovician | Late Ordovician |
|
| Hystrichosphaeridium tshunense | Middle Ordovician | Middle Ordovician |
|
| Hystrichosphaeridium anthophorum | Middle Ordovician | Albian |
|