Genus Quadruilobus
- Species total:
- 5
- Age range:
- 570 - 49 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Quadruilobus | Ordovician | Ordovician |
|
| Quadruilobus argentinensis | Early Ludlovian | Early Ludlovian |
|
| Quadruilobus krempii | Late Paleocene | Early Eocene |
|
| Quadruilobus sp | Llandeilian | Emsian |
|
| Quadruilobus spinatus | Early Paleozoic | Early Llandoverian |
|