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

Sphaenacanthina (21219551)

Children (7 direct children, 19 direct and indirect children):

Acanthometridae (tree size 7)

Hexalaspididae (tree size 2)

Nivaliidae

Diploconidae (tree size 3)

Dorataspididae

Aspidommatidae

Lithopteridae