Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919) Count: 3c;45o;91f;291g;308s Class Fragilariophyceae Round (1990) - araphid, pennate diatoms see Class Bacillariophyceae Haeckel (1878) Count: 12o;14f;54g;8s Subclass Fragilariophycidae Round (1990) - core araphid diatoms Count: [f] 12o;14f;54g;8s Order Climacospheniales Round (1990) Count: [f] 1f;2g Family Climacospheniaceae Round (1990) Count: 2g 1 Genus Climacosphenia Ehrenb. (1843) Count: - 2 Genus Synedrosphenia (H. Perag.) Azpeitia (1911) Count: -