Genus Hystrichosphaeridium
- Species total:
- 513
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hystrichosphaeridium insigne | Early Cambrian | Middle Cambrian |
|
| Hystrichosphaeridium tolboschana | Early Cambrian | Middle Cambrian |
|
| Hystrichosphaeridium atavum | Late Precambrian | Middle Cambrian |
|