| Name | From | To | Age range |
|---|---|---|---|
| Horniella | Eocene | Eocene |
|
| Horniella baculogranus | Cenomanian | Oligocene |
|
| Horniella brevicolpata | Ypresian | Bartonian |
|
| Horniella clavaticosta | Late Eocene | Early Oligocene |
|
| Horniella fissurata | Lutetian | Bartonian |
|
| Horniella fusiformis | Cenomanian | Oligocene |
|
| Horniella genuina | Eocene | Vicksburg |
|
| Horniella modica | Early Eocene | Vicksburg |
|
| Horniella reticulatus | Cenomanian | Oligocene |
|
| Horniella retistriatus | Cenomanian | Oligocene |
|
| Horniella rugosus | Cenomanian | Oligocene |
|
| Horniella secreta | Jackson | Vicksburg |
|
| Horniella sp | Santonian | Early Oligocene |
|
| Horniella sp.1 | Early Eocene | Middle Eocene |
|
| Horniella sp.2 | Lutetian | Bartonian |
|
| Horniella sp.3 | Lutetian | Bartonian |
|
| Horniella sp.4 | Lutetian | Bartonian |
|