| Name | From | To | Age range |
|---|---|---|---|
| Ammonidium ballistum | Early Arenigian | Middle Arenigian |
|
| Ammonidium multipugiunculatum | Early Arenigian | Early Llanvirnian |
|
| Ammonidium exoticum | Arenigian | Llanvirnian |
|
| Ammonidium furtivum | Early Arenigian | Early Llandeilian |
|
| Ammonidium macilentum | Arenigian | Early Llandeilian |
|
| Ammonidium aduncum | Tremadocian | Ashgillian |
|
| Ammonidium sp.C | Late Aeronian | Early Telychian |
|
| Ammonidium listeri | Early Gothlandian | Early Telychian |
|
| Ammonidium sp.A | Rawtheyan | Early Telychian |
|
| Ammonidium sp.B | Late Aeronian | Early Telychian |
|
| Ammonidium sp.1 | Kosovian | Llandoverian |
|
| Ammonidium sp.1 Hill.,1974 | Rhuddanian | Early Sheinwoodian |
|
| Ammonidium wychense | Telychian | Early Wenlockian |
|
| Ammonidium palmitellum | Llandoverian | Wenlockian |
|
| Ammonidium encantador | Fronian | Wenlockian |
|
| Ammonidium waldronense | Late Llandoverian | Ludlovian |
|
| Ammonidium microcladum | Early Paleozoic | Gedinnian |
|