Genus Protosphaeridium
- Species total:
- 85
- Age range:
- 4100 - 309 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protosphaeridium densum | Precambriam | Devonian |
|
| Protosphaeridium torulosum | Precambriam | Early Llanvirnian |
|
| Protosphaeridium patelliforme | Precambriam | Early Gothlandian |
|
| Protosphaeridium gyratum | Precambriam | Vendian |
|
| Protosphaeridium nervatum | Precambriam | Middle Riphean |
|
| Protosphaeridium vermium | Precambriam | Tremadocian |
|
| Protosphaeridium cavernosum | Precambriam | Precambriam |
|
| Protosphaeridium parvulum | Precambriam | Cambrian |
|
| Protosphaeridium flexuosum | Precambriam | Devonian |
|
| Protosphaeridium | Precambriam | Devonian |
|
| Protosphaeridium cellulare | Precambriam | Precambriam |
|
| Protosphaeridium discum | Precambriam | Early Cambrian |
|
| Protosphaeridium tuberculiferum | Precambriam | Devonian |
|
| Protosphaeridium asaphum | Precambriam | Late Ordovician |
|
| Protosphaeridium scabridum | Precambriam | Devonian |
|
| Protosphaeridium sp. Ilie.,1974 | Precambriam | Cambrian |
|
| Protosphaeridium clarum | Precambriam | Cambrian |
|