Related how?

Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Rhizaria
Radiolaria (Radiolarians)
Acantharia (Acantharea)
Acanthophractida
Heliozoa
Centrohelea
Acanthocystida
Acanthocystidae

Choanocystis (20675323)

Children (2 direct children, 2 direct and indirect children):

Choanocystis antarctica

Choanocystis aculeata