Genus Hyalosphaera
- Species total:
- 5
- Age range:
- 1600 - 100 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Hyalosphaera sp | Tithonian | Hauterivian |
|
| Hyalosphaera fluitans | Late Proterozoic | Late Proterozoic |
|
| Hyalosphaera ephemera | Late Toarcian | Early Aalenian |
|
| Hyalosphaera balsensis | Late Jurassic | Albian |
|
| Hyalosphaera | Early Vendian | Early Vendian |
|