| Name | From | To | Age range |
|---|---|---|---|
| Unellium | Middle Devonian | Kazanian |
|
| Unellium ampullium | Early Frasnian | Early Tournaisian |
|
| Unellium cornutum | Late Devonian | Ivorian |
|
| Unellium duplex | Cambrian | Cambrian |
|
| Unellium elongatum | Late Devonian | Tournaisian |
|
| Unellium guanyiqiaoense | Wenlockian | Wenlockian |
|
| Unellium hanjiadianense | Wenlockian | Wenlockian |
|
| Unellium lunatum | Early Frasnian | Middle Frasnian |
|
| Unellium oscitans | Late Devonian | Late Famennian |
|
| Unellium parvum | Early Carboniferous | Early Carboniferous |
|
| Unellium permicum | Kazanian | Kazanian |
|
| Unellium phosphoriense | Permian | Permian |
|
| Unellium piriforme | Early Paleozoic | Ivorian |
|
| Unellium polorum | Early Gothlandian | Early Gothlandian |
|
| Unellium sp | Early Tremadocian | Griesbachian |
|
| Unellium sp. Otto.,1996 | Late Givetian | Early Frasnian |
|
| Unellium sp.1 Eise.,1992 | Late Ordovician | Late Ordovician |
|