| Rank | Scientific name | Taxonomic status |
|---|---|---|
| family | Cyaneidae | accepted |
| family | Drymonematidae | accepted |
| family | Eulithotidae | accepted |
| family | Halicyathidae | accepted |
| family | Pelagiidae | accepted |
| family | Phacellophoridae | accepted |
| family | Semaeostomitidae | accepted |
| family | Ulmaridae | accepted |
| family | Ulmariidae | accepted |
| genus | Eulithota Haeckel, 1869 | doubtful |
| genus | Lascoa Foster, 1979 | doubtful |
| genus | Semaeostomites Haeckel, 1874 | doubtful |
Semaeostomeae. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-17.