Genus Protomassulina
- Species total:
- 5
- Age range:
- 1746.67 - 227.67 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Protomassulina | Early Cambrian | Early Scythian |
|
| Protomassulina conglutinata | Early Cambrian | Early Cambrian |
|
| Protomassulina minutissima | Late Precambrian | Late Precambrian |
|
| Protomassulina simplex | Late Precambrian | Early Cambrian |
|
| Protomassulina sp | Early Permian | Early Permian |
|