| Kingdom | Phylum | Class |
|---|---|---|
| Chromista | Haptophyta | Prymnesiophyceae |
| Rank | Scientific name | Taxonomic status |
|---|---|---|
| family | Discoasteraceae | accepted |
| family | Fasciculithaceae | accepted |
| family | Heliolithaceae | accepted |
| family | Sphenolithaceae | accepted |
| genus | Diantholitha Aubry, 2011 | doubtful |
| genus | Gomphiolithus Aubry, 2011 | doubtful |
| genus | Imperiaster E.Martini, 1970 | doubtful |
| genus | Lithoptychius Aubry, 2011 | doubtful |
| genus | Marthasterites G.Deflandre, 1959 | doubtful |
| genus | Rhomboaster M.N.Bramlette & F.R.Sullivan, 1961 | doubtful |
| genus | Tribrachiatus Shamrai, 1963 | doubtful |
| genus | Trochastrites H.Stradner, 1961 | doubtful |
Discoasterales. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2021-08-22.