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 Tabellariales Round (1990)
         Family Tabellariaceae Kütz. (1844)
           Genus Oxyneis Round (1990) [monotypic]
             Oxyneis binalisᵀ (Ehrenb.) Round (1990)