Kingdom Protoctista Hogg, 1860 Count: [p] 36p;91c;87o;183f;507g;35s;2v Phylum Bacillariophyta Engl. & Gilg (1919) - diatoms see [unranked] Diatomea Kütz. (1844) Count: [f] 4c;41o;83f;204g Class Fragilariophyceae Round (1990) - araphid, pennate diatoms see Class Bacillariophyceae Haeckel (1878) Count: 10o;13f;35g Subclass Fragilariophycidae Round (1990) - core araphid diatoms Count: [f] 10o;13f;35g Order Rhaphoneidales Round (1990) Count: [f] 2f;7g Family Rhaphoneidaceae Forti (1912) Count: 6g Genus Sceptroneis Ehrenb. (1844) Count: -