Genus Riasanodinium
- Species total:
- 2
- Age range:
- 145 - 129 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Riasanodinium | Ryazanian | Ryazanian |
|
| Riasanodinium fedorovae | Portlandian | Ryazanian |
|
Genus Riasanodinium
- Species total:
- 2
- Age range:
- 145 - 129 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Riasanodinium | Ryazanian | Ryazanian |
|
| Riasanodinium fedorovae | Portlandian | Ryazanian |
|