Genus Pterotosphaerula
- Species total:
- 4
- Age range:
- 570 - 372 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Pterotosphaerula | Late Ludlovian | Early Gedinnian |
|
| Pterotosphaerula aliculata | Late Llandoverian | Early Gedinnian |
|
| Pterotosphaerula astrala | Early Paleozoic | Pragian |
|
| Pterotosphaerula drepaniptychius | Ludlovian | Early Gedinnian |
|