| Name | From | To | Age range |
|---|---|---|---|
| Membranosphaera sp.B | Danian | Ypresian |
|
| Membranosphaera sp.A De C.,1975 | Danian | Danian |
|
| Membranosphaera sp.III | Early Ypresian | Early Ypresian |
|
| Name | From | To | Age range |
|---|---|---|---|
| Membranosphaera sp.B | Danian | Ypresian |
|
| Membranosphaera sp.A De C.,1975 | Danian | Danian |
|
| Membranosphaera sp.III | Early Ypresian | Early Ypresian |
|