Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium lewisii | Devonian | Devonian |
|
| Hystrichosphaeridium leptodermum | Oligocene | Middle Miocene |
|
| Hystrichosphaeridium leonardianum | Early Permian | Early Permian |
|
| Hystrichosphaeridium layeri | Late Devonian | Late Devonian |
|
| Hystrichosphaeridium latirictum | Thanetian | Miocene |
|
| Hystrichosphaeridium lateraliprocessum | Early Eocene | Oligocene |
|
| Hystrichosphaeridium langii | Keuper | Lutetian |
|
| Hystrichosphaeridium lairdii | Nd | Nd |
|
| Hystrichosphaeridium laevigatum | Wenlockian | Ludlovian |
|
| Hystrichosphaeridium lacunosum | Jurassic | Jurassic |
|
| Hystrichosphaeridium korykos | Nd | Nd |
|
| Hystrichosphaeridium kiowanum | Albian | Albian |
|
| Hystrichosphaeridium israelianum | Pleistocene | Pleistocene |
|
| Hystrichosphaeridium isocalamum | Late Tithonian | Aptian |
|
| Hystrichosphaeridium irregulare | Late Jurassic | Early Albian |
|
| Hystrichosphaeridium intermedium | Silurian | Middle Eocene |
|
| Hystrichosphaeridium integrum | Late Givetian | Late Givetian |
|