| Rank | Scientific name | Taxonomic status |
|---|---|---|
| family | Acanthoceratidae | accepted |
| family | Acanthoclymeniidae | accepted |
| family | Acrioceratidae | accepted |
| family | Acrocanitidae | accepted |
| family | Acrochordiceratidae | accepted |
| family | Adrianitidae | accepted |
| family | Adygeitidae | accepted |
| family | Aegocrioceratidae | accepted |
| family | Agathiceratidae | accepted |
| family | Agoniatitidae | accepted |
| family | Albanitidae | accepted |
| family | Aleteceratidae | accepted |
| family | Amaltheidae | accepted |
| family | Anarcestidae | accepted |
| family | Ancyloceratidae | accepted |
| family | Anderssonoceratidae | accepted |
| family | Anisoceratidae | accepted |
| family | Anthracoceratidae | accepted |
| family | Anuitidae | accepted |
| family | Aplococeratidae | accepted |
| Show more | ||
Ammonoidea. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-16.