Genus Protosphaeridium
- Species total:
- 85
- Age range:
- 4100 - 309 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protosphaeridium volkovae | Middle Proterozoic | Late Proterozoic |
|
| Protosphaeridium volcovae | Late Algonkian | Late Algonkian |
|
| Protosphaeridium visicarius | Early Gedinnian | Early Gedinnian |
|
| Protosphaeridium vesiculare | Early Gedinnian | Siegenian |
|
| Protosphaeridium vermium | Precambriam | Tremadocian |
|
| Protosphaeridium tuberculiferum | Precambriam | Devonian |
|
| Protosphaeridium torulosum | Precambriam | Early Llanvirnian |
|
| Protosphaeridium ternatum | Early Riphean | Vendian |
|
| Protosphaeridium subcrassatum | Late Proterozoic | Late Proterozoic |
|
| Protosphaeridium spumosum | Early Gedinnian | Early Gedinnian |
|
| Protosphaeridium spinosus | Early Devonian | Middle Devonian |
|
| Protosphaeridium spinosum | Early Gedinnian | Early Gedinnian |
|
| Protosphaeridium sp.Visa.et al,1976 | Ordovician | Ordovician |
|
| Protosphaeridium sp.1 | Late Ordovician | Early Gothlandian |
|
| Protosphaeridium sp. Reit.& Holl,1988 | Riphean | Early Cambrian |
|
| Protosphaeridium sp. Ilie.,1974 | Precambriam | Cambrian |
|
| Protosphaeridium sp. Ilie.& Krau.,1975 | Middle Proterozoic | Namurian |
|