Superregnum: Eukaryota Cladus: Diaphoretickes Cladus: Sar Infraregnum: Heterokonta Phylum: Ochrophyta Subphylum: Khakista Classis: Bacillariophyceae Subclassis: Coscinodiscophycidae Superordo: Lithodesmiophycanae Ordo:
Familia: Lithodesmiaceae
Lithodesmiales Round, 1990