| Name | From | To | Age range |
|---|---|---|---|
| Hercochitina | Ordovician | Ashgillian |
|
| Hercochitina achabae | Early Gamachian | Late Richmondian |
|
| Hercochitina bromidensis | Middle Ordovician | Blackriveran |
|
| Hercochitina crickmayi | Ordovician | Early Gothlandian |
|
| Hercochitina cristata | Ordovician | Early Ashgillian |
|
| Hercochitina downiei | Ordovician | Late Ordovician |
|
| Hercochitina duplicatus | Late Tremadocian | Early Ashgillian |
|
| Hercochitina duplicitas | Ordovician | Ordovician |
|
| Hercochitina filamentosa | Late Ordovician | Early Gothlandian |
|
| Hercochitina gamachiana | Late Ordovician | Late Ordovician |
|
| Hercochitina grandispina | Llanvirnian | Early Gothlandian |
|
| Hercochitina hirsuta | Caradocian | Caradocian |
|
| Hercochitina lindsayensis | Late Ordovician | Late Ordovician |
|
| Hercochitina lineola | Late Champlainian | Early Ashgillian |
|
| Hercochitina minuta | Arenigian | Ashgillian |
|
| Hercochitina modesta | Late Ordovician | Late Ordovician |
|
| Hercochitina multispinata | Caradocian | Caradocian |
|