Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium brideauxii | Barremian | Aptian |
|
| Hystrichosphaeridium bulbosum | Cretaceous | Cretaceous |
|
| Hystrichosphaeridium caiobense | Paleocene | Paleocene |
|
| Hystrichosphaeridium calospinum | Eocene | Oligocene |
|
| Hystrichosphaeridium calvum | Middle Clintonian | Late Clintonian |
|
| Hystrichosphaeridium cambayense | Eocene | Early Miocene |
|
| Hystrichosphaeridium caminuspinum | Early Sinemurian | Toarcian |
|
| Hystrichosphaeridium cantharellus | Late Oligocene | Late Oligocene |
|
| Hystrichosphaeridium capillare | Triassic | Early Jurassic |
|
| Hystrichosphaeridium capitatum | Oxfordian | Kimmeridgian |
|
| Hystrichosphaeridium castanea | Late Ordovician | Late Ordovician |
|
| Hystrichosphaeridium caulleryi | Jurassic | Portlandian |
|
| Hystrichosphaeridium centrocarpum | Late Cretaceous | Late Miocene |
|
| Hystrichosphaeridium choanophorum | Early Cretaceous | Pleistocene |
|
| Hystrichosphaeridium cinctum | Early Oligocene | Early Oligocene |
|
| Hystrichosphaeridium circumscissum | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium classicum | Devonian | Devonian |
|