Genus Prototylosphaeridium
- Species total:
- 4
- Age range:
- 1746.67 - 230 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Prototylosphaeridium | Late Precambrian | Paleozoic |
|
| Prototylosphaeridium asper | Vendian | Vendian |
|
| Prototylosphaeridium crispum | Early Cambrian | Early Cambrian |
|
| Prototylosphaeridium sp | Vendian | Vendian |
|