Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Rhizaria
Radiolaria (Radiolarians)
Acantharia (Acantharea)
Acanthophractida
Heliozoa
Centrohelea
Acanthocystida
Acanthocystidae
Children (2 direct children, 2 direct and indirect children):
Choanocystis antarctica
Choanocystis aculeata