| Rank | Scientific name | Taxonomic status |
|---|---|---|
| family | Diadematidae | accepted |
| family | Lissodiadematidae | accepted |
| genus | Ancylocidaris Miller, 1929 | accepted |
| genus | Endeodiadema Loriol, 1890 | doubtful |
| genus | Engelia Tornquist, 1908 | doubtful |
| genus | Helodiadema Mortensen, 1939 | doubtful |
| genus | Heteropedina Michalet, 1895 | accepted |
| genus | Macrodiadema Lambert, 1898 | doubtful |
| genus | Pelanodiadema | doubtful |
| genus | Tiaridia Pomel, 1883 | doubtful |
| unranked | BOLD:ACJ9920 | accepted |
Diadematoida. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-18.