| Kingdom | Phylum | Class | Order |
|---|---|---|---|
| Chromista | Ciliophora | Oligohymenophorea | Peritrichida |
| Rank | Scientific name | Taxonomic status |
|---|---|---|
| genus | Gerda Claparede & Lachmann, 1858 | accepted |
| genus | Ophionella | accepted |
| genus | Ophrydium Bory de St.Vincent, 1826 | accepted |
Ophrydiidae. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2021-09-08.