Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919)
   Class Fragilariophyceae Round (1990) - araphid, pennate diatoms see Class Bacillariophyceae Haeckel (1878)
     Subclass Fragilariophycidae Round (1990) - core araphid diatoms
       Order Rhaphoneidales Round (1990)
         Family Rhaphoneidaceae Forti (1912)
           1 Genus Rhaphoneis Ehrenb. (1844)
           2 Genus Diplomenora K.L. Blazé (1984)
           3 Genus Delphineis G.W. Andrews (1977)
           4 Genus Neodelphineis
           5 Genus Perissonoë G.W. Andrews & Stoelzel (1984)
           6 Genus Sceptroneis Ehrenb. (1844)