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] 1 Oxyneis binalisᵀ (Ehrenb.) Round (1990)