| Name | From | To | Age range |
|---|---|---|---|
| Lejeunecysta | Senonian | Recent |
|
| Lejeunecysta aechmophora | Middle Oligocene | Late Oligocene |
|
| Lejeunecysta applanata | Early Miocene | Early Miocene |
|
| Lejeunecysta beninensis | Late Danian | Late Danian |
|
| Lejeunecysta brassensis | Paleocene | Middle Miocene |
|
| Lejeunecysta catomus | Middle Miocene | Early Pleistocene |
|
| Lejeunecysta cinctoria | Maestrichtian | Rupelian |
|
| Lejeunecysta circularis | Turonian | Middle Eocene |
|
| Lejeunecysta communis | Early Danian | Pleistocene |
|
| Lejeunecysta concreta | Holocene | Holocene |
|
| Lejeunecysta convexa | Late Oligocene | Pleistocene |
|
| Lejeunecysta cowiei | Early Miocene | Quaternary |
|
| Lejeunecysta decorinassa | Maestrichtian | Maestrichtian |
|
| Lejeunecysta diversiforma | Bormidian | Holocene |
|
| Lejeunecysta echinata | Nd | Nd |
|
| Lejeunecysta epidoma | Nd | Nd |
|
| Lejeunecysta fallax | Coniacian | Quaternary |
|