Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium cruciatum | Turonian | Maastrichtian |
|
| Hystrichosphaeridium duplum | Late Valanginian | Maastrichtian |
|
| Hystrichosphaeridium xanthiopyxides | Late Oxfordian | Maastrichtian |
|
| Hystrichosphaeridium albertense | Early Cretaceous | Late Cretaceous |
|
| Hystrichosphaeridium proprium | Late Campanian | Late Maestrichtian |
|
| Hystrichosphaeridium readei | Albian | Senonian |
|
| Hystrichosphaeridium dowlingii | Albian | Maestrichtian |
|
| Hystrichosphaeridium atlasiense | Cretaceous | Maestrichtian |
|
| Hystrichosphaeridium mensula | Late Cretaceous | Danian |
|
| Hystrichosphaeridium sp.4 Stre.et al,1977 | Middle Maastrichtian | Danian |
|
| Hystrichosphaeridium striolatum | Cretaceous | Danian |
|
| Hystrichosphaeridium sp.5 Stre.et al,1977 | Middle Maastrichtian | Danian |
|
| Hystrichosphaeridium clavigerum | Cretaceous | Danian |
|
| Hystrichosphaeridium sp. Salu.& Kind.,1981 | Maastrichtian | Danian |
|
| Hystrichosphaeridium horridum | Valanginian | Danian |
|
| Hystrichosphaeridium sp.A Drug.,1967 | Maastrichtian | Danian |
|
| Hystrichosphaeridium elegantulum | Late Turonian | Danian |
|