Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium multicornutum | Cenomanian | Cenomanian |
|
| Hystrichosphaeridium sp.22 | Cenomanian | Cenomanian |
|
| Hystrichosphaeridium form b | Early Cenomanian | Early Cenomanian |
|
| Hystrichosphaeridium form a | Early Cenomanian | Early Cenomanian |
|
| Hystrichosphaeridium spiculatum | Cenomanian | Cenomanian |
|
| Hystrichosphaeridium raritanianum | Cenomanian | Early Turonian |
|
| Hystrichosphaeridium saxoniensis | Cenomanian | Turonian |
|
| Hystrichosphaeridium echinatum | Turonian | Campanian |
|
| Hystrichosphaeridium conispiniferum | Turonian | Campanian |
|
| Hystrichosphaeridium patulum | Turonian | Middle Oligocene |
|
| Hystrichosphaeridium cruciatum | Turonian | Maastrichtian |
|
| Hystrichosphaeridium pterophorum | Turonian | Santonian |
|
| Hystrichosphaeridium claviferum | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium sahii | Late Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium simplex | Late Cretaceous | Middle Miocene |
|
| Hystrichosphaeridium sp. Cran.et al,1960 | Late Cretaceous | Oligocene |
|
| Hystrichosphaeridium verbinense | Late Cretaceous | Late Cretaceous |
|