Genus Protosphaeridium
- Species total:
- 85
- Age range:
- 4100 - 309 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protosphaeridium nervatum | Precambriam | Middle Riphean |
|
| Protosphaeridium gyratum | Precambriam | Vendian |
|
| Protosphaeridium duricorium | Riphean | Vendian |
|
| Protosphaeridium ternatum | Early Riphean | Vendian |
|
| Protosphaeridium diatretum | Middle Proterozoic | Late Proterozoic |
|
| Protosphaeridium cambriense | Middle Proterozoic | Late Proterozoic |
|
| Protosphaeridium volkovae | Middle Proterozoic | Late Proterozoic |
|
| Protosphaeridium fulvastrum | Late Precambrian | Vendian |
|
| Protosphaeridium infriatum | Middle Proterozoic | Early Cambrian |
|
| Protosphaeridium payraeum | Late Precambrian | Early Cambrian |
|
| Protosphaeridium sp. Reit.& Holl,1988 | Riphean | Early Cambrian |
|
| Protosphaeridium discum | Precambriam | Early Cambrian |
|
| Protosphaeridium punctatum | Middle Riphean | Early Cambrian |
|
| Protosphaeridium paleaceum | Middle Precambrian | Early Cambrian |
|
| Protosphaeridium reticulatum | Middle Riphean | Early Cambrian |
|
| Protosphaeridium papyraceum | Precambriam | Late Cambrian |
|
| Protosphaeridium parvulum | Precambriam | Cambrian |
|