Related how?

Biota (Life)
Eukaryote (Eukarya)
Chromista
Harosa
Rhizaria
Radiolaria (Radiolarians)
Acantharia (Acantharea)

Holacanthida (1624249)

Children (5 direct children, 13 direct and indirect children):

Acanthochiasmatidae (tree size 3)

Acanthoplegmatidae (tree size 2)
Acanthoplegmidae

Chiastolidae

Acanthochiasmidae (tree size 3)

Acanthocollidae