Genus Protomycterosphaeridium
- Species total:
- 3
- Age range:
- 2923.33 - 230 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protomycterosphaeridium | Late Precambrian | Paleozoic |
|
| Protomycterosphaeridium marmoratum | Late Precambrian | Late Ordovician |
|
| Protomycterosphaeridium sp | Middle Precambrian | Middle Cambrian |
|