| Name | From | To | Age range |
|---|---|---|---|
| Pirea | Ordovician | Early Llanvirnian |
|
| Pirea ambigua | Llanvirnian | Llanvirnian |
|
| Pirea baculifera | Arenigian | Ashgillian |
|
| Pirea calvitia | Arenigian | Arenigian |
|
| Pirea capitata | Ordovician | Early Llanvirnian |
|
| Pirea capitulifera | Llanvirnian | Llanvirnian |
|
| Pirea colliformis | Late Tremadocian | Llanvirnian |
|
| Pirea columbifera | Arenigian | Arenigian |
|
| Pirea comata | Early Llanvirnian | Early Llanvirnian |
|
| Pirea dubia | Early Paleozoic | Pridolian |
|
| Pirea fausta | Early Tremadocian | Llanvirnian |
|
| Pirea inflata | Late Llanvirnian | Late Llanvirnian |
|
| Pirea lagenaria | Arenigian | Early Caradocian |
|
| Pirea levigata | Arenigian | Ashgillian |
|
| Pirea nervata | Late Llanvirnian | Late Llanvirnian |
|
| Pirea orbicularis | Middle Cambrian | Late Cambrian |
|
| Pirea ornata | Early Ordovician | Early Cincinnatian |
|