Genus Duplicisphaeridium
- Species total:
- 2
- Age range:
- 500 - 440 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Duplicisphaeridium | Ordovician | Caradocian |
|
| Duplicisphaeridium spinigerum | Ordovician | Caradocian |
|
Genus Duplicisphaeridium
- Species total:
- 2
- Age range:
- 500 - 440 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Duplicisphaeridium | Ordovician | Caradocian |
|
| Duplicisphaeridium spinigerum | Ordovician | Caradocian |
|