Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium unituberculatum | Cretaceous | Early Albian |
|
| Hystrichosphaeridium valgum | Early Cretaceous | Aptian |
|
| Hystrichosphaeridium variabilis | Bartonian | Bartonian |
|
| Hystrichosphaeridium vasiformum | Early Cretaceous | Early Eocene |
|
| Hystrichosphaeridium veliferum | Tremadocian | Tremadocian |
|
| Hystrichosphaeridium venustum | Late Givetian | Late Givetian |
|
| Hystrichosphaeridium verbinense | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium vermiculatum | Precambriam | Recent |
|
| Hystrichosphaeridium verschiedener | Nd | Nd |
|
| Hystrichosphaeridium vestitum | Jurassic | Callovian |
|
| Hystrichosphaeridium viticulosum | Middle Ordovician | Middle Ordovician |
|
| Hystrichosphaeridium vitile | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium westii | Pliocene | Early Pleistocene |
|
| Hystrichosphaeridium whitei | Cretaceous | Coniacian |
|
| Hystrichosphaeridium williereae | Ashgillian | Early Taranakian |
|
| Hystrichosphaeridium wimanii | Tremadocian | Llandoverian |
|
| Hystrichosphaeridium xanthiopyxides | Late Oxfordian | Maastrichtian |
|