Genus Constrictosphaerina
- Species total:
- 3
- Age range:
- 4100 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Constrictosphaerina | Precambriam | Precambriam |
|
| Constrictosphaerina alaica | Early Cambrian | Early Cambrian |
|
| Constrictosphaerina sp | Precambriam | Precambriam |
|