Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium sp.E Sriv.& Bane.,1969 | Eocene | Oligocene |
|
| Hystrichosphaeridium sp.F | Late Aptian | Late Aptian |
|
| Hystrichosphaeridium sp.G | Late Aptian | Late Aptian |
|
| Hystrichosphaeridium sp.H | Late Aptian | Late Aptian |
|
| Hystrichosphaeridium speciale | Nd | Nd |
|
| Hystrichosphaeridium spectabile | Miocene | Late Neogene |
|
| Hystrichosphaeridium spicatum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium spiceum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium spiciferum | Middle Devonian | Middle Devonian |
|
| Hystrichosphaeridium spiculare | Ordovician | Caradocian |
|
| Hystrichosphaeridium spiculatum | Cenomanian | Cenomanian |
|
| Hystrichosphaeridium spinellosum | Ordovician | Ordovician |
|
| Hystrichosphaeridium spinescens | Ordovician | Ordovician |
|
| Hystrichosphaeridium spinipansatum | Early Cretaceous | Early Cretaceous |
|
| Hystrichosphaeridium spinoglobosum | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium spinosum | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium spinulosum | Late Paleocene | Middle Eocene |
|