Division Bacillariophyta Engl. & Gilg (1919) see Phylum Bacillariophyta Engl. & Gilg (1919) Class Bacillariophyceae Haeckel (1878) - pennates Subclass Bacillariophycidae D.G.Mann (1990) - raphid diatoms Order Thalassiophysales D.G.Mann (1990) Family Thalassiophysaceae D.G.Mann (1990) Genus Thalassiophysaᵀ Conger (1954)