Genus Protosphaeridium
- Species total:
- 85
- Age range:
- 4100 - 309 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protosphaeridium petaliferum | Middle Cambrian | Tremadocian |
|
| Protosphaeridium petigenosum | Early Devonian | Middle Devonian |
|
| Protosphaeridium planum | Middle Precambrian | Devonian |
|
| Protosphaeridium punctatum | Middle Riphean | Early Cambrian |
|
| Protosphaeridium pusillum | Precambriam | Devonian |
|
| Protosphaeridium pustulata | Late Proterozoic | Late Proterozoic |
|
| Protosphaeridium reticulatum | Middle Riphean | Early Cambrian |
|
| Protosphaeridium rigadallum | Cambrian | Early Gothlandian |
|
| Protosphaeridium rigidulum | Precambriam | Devonian |
|
| Protosphaeridium rugosum | Late Proterozoic | Late Proterozoic |
|
| Protosphaeridium rugulosum | Middle Cambrian | Tremadocian |
|
| Protosphaeridium scabridum | Precambriam | Devonian |
|
| Protosphaeridium semiclausum | Early Devonian | Early Devonian |
|
| Protosphaeridium sigillarum | Middle Proterozoic | Middle Proterozoic |
|
| Protosphaeridium sorediforme | Middle Proterozoic | Arenigian |
|
| Protosphaeridium sp | Precambriam | Early Carboniferous |
|
| Protosphaeridium sp. Guni.,1987 | Late Riphean | Late Riphean |
|