†suborder Discoideae
Parent taxon: Bacillariophyta according to R. Patrick 1940
Sister taxa: Archaeomonas, Bacillariophyceae, Dictyochophyceae, Clavicula, Cymatogonia, Triceratiaceae, Periptera, Macrora, Cosmiodiscus, Bacillariophytina, Pleurosigma, Mediaria, Biddulphiaceae, Dossetia, Stephanogonia, Bruniopsis, Xanthophyceae, Phaeophyceae
Subtaxa: none
Distribution: there are no occurrences of Discoideae in the database