Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium digitatum | Tremadocian | Late Eocene |
|
| Hystrichosphaeridium dignum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium diktyoplokum | Late Cretaceous | Nd |
|
| Hystrichosphaeridium diploporum | Ordovician | Ordovician |
|
| Hystrichosphaeridium dispare | Valanginian | Hauterivian |
|
| Hystrichosphaeridium dissimilare | Jurassic | Jurassic |
|
| Hystrichosphaeridium divaricatum | Precambriam | Recent |
|
| Hystrichosphaeridium divergens | Tertiary | Early Oligocene |
|
| Hystrichosphaeridium diversitubulatum | Valanginian | Valanginian |
|
| Hystrichosphaeridium dowlingii | Albian | Maestrichtian |
|
| Hystrichosphaeridium duplum | Late Valanginian | Maastrichtian |
|
| Hystrichosphaeridium duvernayensis | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium eccentrum | Neocomian | Middle Turonian |
|
| Hystrichosphaeridium echinatum | Turonian | Campanian |
|
| Hystrichosphaeridium echinoides | Middle Oligocene | Middle Miocene |
|
| Hystrichosphaeridium echinosum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium ehrenbergii | Jurassic | Callovian |
|