| Name | From | To | Age range |
|---|---|---|---|
| Ammonidium wychense | Telychian | Early Wenlockian |
|
| Ammonidium waldronense | Late Llandoverian | Ludlovian |
|
| Ammonidium uncinum | Early Devonian | Emsian |
|
| Ammonidium toriferum | Early Devonian | Early Devonian |
|
| Ammonidium telychense | Telychian | Telychian |
|
| Ammonidium sprucegrovense | Frasnian | Middle Tournaisian |
|
| Ammonidium sp.SA | Middle Telychian | Middle Telychian |
|
| Ammonidium sp.C | Late Aeronian | Early Telychian |
|
| Ammonidium sp.B Hash.& Play.,1998 | Frasnian | Frasnian |
|
| Ammonidium sp.B | Late Aeronian | Early Telychian |
|
| Ammonidium sp.A Hash.& Play.,1998 | Frasnian | Frasnian |
|
| Ammonidium sp.A | Rawtheyan | Early Telychian |
|
| Ammonidium sp.4 | Middle Pridolian | Middle Pridolian |
|
| Ammonidium sp.3 | Middle Pridolian | Frasnian |
|
| Ammonidium sp.2 Anan.,1974 | Emsian | Frasnian |
|
| Ammonidium sp.2 | Homerian | Homerian |
|
| Ammonidium sp.1 Hill.,1974 | Rhuddanian | Early Sheinwoodian |
|