| Name | From | To | Age range |
|---|---|---|---|
| Aremoricanium squarrosum | Arenigian | Ashgillian |
|
| Aremoricanium syringosage | Late Arenigian | Early Llandoverian |
|
| Aremoricanium tenuiprocessum | Late Llanvirnian | Late Llanvirnian |
|
| Aremoricanium testudinarium | Arenigian | Early Llanvirnian |
|
| Aremoricanium tosotrichion | Middle Ordovician | Llandeilian |
|