Genus Acanthosphaeridium
- Species total:
- 7
- Age range:
- 500 - 370 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Acanthosphaeridium aciculare | Early Ordovician | Early Ordovician |
|
| Acanthosphaeridium corrugativum | Early Ordovician | Early Ordovician |
|
| Acanthosphaeridium cuspidatum | Llandeilian | Llandeilian |
|
| Acanthosphaeridium gdowia | Early Ordovician | Late Ordovician |
|
| Acanthosphaeridium hirsutum | Arenigian | Arenigian |
|
| Acanthosphaeridium pilosum | Arenigian | Arenigian |
|
| Acanthosphaeridium sp | Ordovician | Early Devonian |
|