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 Naviculales Bessey (1907) Suborder Neidiineae D.G.Mann (1990) 1 Family Berkeleyaceae D.G.Mann (1990) 2 Family Cavinulaceae D.G.Mann (1990) 3 Family Cosmioneidaceae D.G.Mann (1990) 4 Family Scolioneidaceae D.G.Mann (1990) 5 Family Diadesmidaceae D.G.Mann (1990) 6 Family Amphipleuraceae Grunow (1862) 7 Family Brachysiraceae D.G.Mann (1990) 8 Family Neidiaceae Mereschk. (1903) 9 Family Scoliotropidaceae Mereschk. (1903)