Genus Bitubericysta
- Species total:
- 2
- Age range:
- 54.5 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Bitubericysta | Late Ypresian | Late Ypresian |
|
| Bitubericysta boroujiana | Ypresian | Ypresian |
|
Genus Bitubericysta
- Species total:
- 2
- Age range:
- 54.5 - 0 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Bitubericysta | Late Ypresian | Late Ypresian |
|
| Bitubericysta boroujiana | Ypresian | Ypresian |
|