Superregnum: Eukaryota Regnum: Chromista Subregnum: Harosa Infraregnum: Heterokonta Phylum: Ochrophyta Subphylum: Khakista Classis: Bacillariophyceae Subclassis: Coscinodiscophycidae Superordo: Lithodesmiophycanae Ordo: Lithodesmiales
Familia: Lithodesmiaceae
Lithodesmiales Round, 1990