Related how?

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

Arthracanthida (4797630)

Children (5 direct children, 69 direct and indirect children):

Sphaenacanthina (tree size 19)

Phyllacantha (tree size 18)

Acanthostaurus (tree size 3)

Sphaenacantha (tree size 3)

Dorataspidae (tree size 21)