Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium sp. Mart.& Rous.,1966 | Oligocene | Early Pliocene |
|
| Hystrichosphaeridium type 4 | Oligocene | Oligocene |
|
| Hystrichosphaeridium leptodermum | Oligocene | Middle Miocene |
|
| Hystrichosphaeridium type 11 | Oligocene | Oligocene |
|
| Hystrichosphaeridium grallaeforme | Oligocene | Oligocene |
|
| Hystrichosphaeridium xipheum | Oligocene | Oligocene |
|
| Hystrichosphaeridium type 10 | Oligocene | Oligocene |
|
| Hystrichosphaeridium type 5 | Oligocene | Oligocene |
|
| Hystrichosphaeridium cinctum | Early Oligocene | Early Oligocene |
|
| Hystrichosphaeridium echinoides | Middle Oligocene | Middle Miocene |
|
| Hystrichosphaeridium plicatum | Middle Oligocene | Middle Oligocene |
|
| Hystrichosphaeridium longofilum | Middle Oligocene | Middle Oligocene |
|
| Hystrichosphaeridium lobospinosum | Middle Oligocene | Late Miocene |
|
| Hystrichosphaeridium stephanophorum | Middle Oligocene | Late Oligocene |
|
| Hystrichosphaeridium cantharellus | Late Oligocene | Late Oligocene |
|
| Hystrichosphaeridium placacantha | Miocene | Miocene |
|
| Hystrichosphaeridium globosus | Miocene | Miocene |
|