| Rank | Scientific name | Taxonomic status |
|---|---|---|
| order | Aphelenchida | accepted |
| order | Ascaridida | accepted |
| order | Camallanida | accepted |
| order | Diplogasterida | accepted |
| order | Oxyurida | accepted |
| order | Rhabditida | accepted |
| order | Spirurida | accepted |
| order | Strongylida | accepted |
| order | Tylenchida | accepted |
Secernentea. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-25.