Genus Acrosphaeridium
- Species total:
- 4
- Age range:
- 500 - 436.67 MA (obsolete dating)
- IRMNG:
- find
Name | From | To | Age range |
---|---|---|---|
Acrosphaeridium | Ordovician | Ordovician |
|
Acrosphaeridium densum | Late Llanvirnian | Early Caradocian |
|
Acrosphaeridium esthonicum | Middle Caradocian | Middle Ashgillian |
|
Acrosphaeridium reticulatum | Early Caradocian | Early Caradocian |
|