Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium tribrachiosum | Albian | Albian |
|
| Hystrichosphaeridium transculentum | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium toyetae | Ludlovian | Eifelian |
|
| Hystrichosphaeridium toryna | Late Jurassic | Portlandian |
|
| Hystrichosphaeridium tolboschana | Early Cambrian | Middle Cambrian |
|
| Hystrichosphaeridium tiara | Cretaceous | Miocene |
|
| Hystrichosphaeridium tenuitubatum | Early Maastrichtian | Early Maastrichtian |
|
| Hystrichosphaeridium tenuicapillatum | Senonian | Senonian |
|
| Hystrichosphaeridium tenuicapillata | Nd | Nd |
|
| Hystrichosphaeridium sylhetii | Tertiary | Tertiary |
|
| Hystrichosphaeridium subrecurvum | Early Ordovician | Early Ordovician |
|
| Hystrichosphaeridium striolatum | Cretaceous | Danian |
|
| Hystrichosphaeridium striatoconum | Albian | Campanian |
|
| Hystrichosphaeridium stimuliferum | Jurassic | Late Malm |
|
| Hystrichosphaeridium stephanophorum | Middle Oligocene | Late Oligocene |
|
| Hystrichosphaeridium stellatum | Early Cretaceous | Late Neogene |
|
| Hystrichosphaeridium stellaeforme | Early Ordovician | Early Ordovician |
|