Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Halvaria
Heterokonta
Ochrophyta (Heterokontophyta)
Khakista (Diatomista)
Bacillariophyceae
Fragilariophycidae
Rhaphoneidales
Psammodiscaceae
Children (2 direct children, 2 direct and indirect children):
Psammodiscus calceatus
Psammodiscus nitidus