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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Echinodermata (Echinoderms)
Asterozoa
Ophiuroidea (The brittle stars)
Myophiuroidea
Metophiurida
Ophintegrida
Amphilepidida
Gnathophiurina

Ophiactoidea (51880092)

Children (4 direct children, 503 direct and indirect children):

Ophiactidae (tree size 124)

Ophiotrichidae (tree size 339)
Ophiothricidae

Ophiopholidae (tree size 12)

Ophiothamnidae (tree size 24)