Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium macrotubulum | Early Neocomian | Early Aptian |
|
| Hystrichosphaeridium eoinodes | Oxfordian | Early Aptian |
|
| Hystrichosphaeridium sp. Warr.,1967 | Early Valanginian | Barremian |
|
| Hystrichosphaeridium petilum | Jurassic | Barremian |
|
| Hystrichosphaeridium type 462 | Hauterivian | Barremian |
|
| Hystrichosphaeridium sp.A Habi.,1972 | Early Jurassic | Barremian |
|
| Hystrichosphaeridium sp.BE | Hauterivian | Barremian |
|
| Hystrichosphaeridium bicyclospinosum | Late Tithonian | Hauterivian |
|
| Hystrichosphaeridium sp.27a | Valanginian | Hauterivian |
|
| Hystrichosphaeridium scoriaceum | Tithonian | Hauterivian |
|
| Hystrichosphaeridium dispare | Valanginian | Hauterivian |
|
| Hystrichosphaeridium type 419 | Berriasian | Valanginian |
|
| Hystrichosphaeridium polychonion | Late Berriasian | Valanginian |
|
| Hystrichosphaeridium toryna | Late Jurassic | Portlandian |
|
| Hystrichosphaeridium caulleryi | Jurassic | Portlandian |
|
| Hystrichosphaeridium stimuliferum | Jurassic | Late Malm |
|
| Hystrichosphaeridium pattei | Pliensbachian | Kimmeridgian |
|