Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium clavatum | Cambrian | Cambrian |
|
| Hystrichosphaeridium claviculorum | Early Oxfordian | Early Oxfordian |
|
| Hystrichosphaeridium claviferum | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium clavigerum | Cretaceous | Danian |
|
| Hystrichosphaeridium coelenteratum | Aptian | Early Albian |
|
| Hystrichosphaeridium cognitum | Ordovician | Middle Ordovician |
|
| Hystrichosphaeridium colligerum | Albian | Eocene |
|
| Hystrichosphaeridium collum | Albian | Albian |
|
| Hystrichosphaeridium communis | Ordovician | Silurian |
|
| Hystrichosphaeridium complex | Late Jurassic | Miocene |
|
| Hystrichosphaeridium congestum | Precambriam | Recent |
|
| Hystrichosphaeridium coniferum | Wenlockian | Wenlockian |
|
| Hystrichosphaeridium conispiniferum | Turonian | Campanian |
|
| Hystrichosphaeridium conspicuum | Late Cambrian | Late Cambrian |
|
| Hystrichosphaeridium cooksoniae | Tournaisian | Maestrichtian |
|
| Hystrichosphaeridium corniformis | Llandeilian | Llandeilian |
|
| Hystrichosphaeridium cornigerum | Middle Jurassic | Oligocene |
|