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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)
Sea urchin (Echinoidea)
Euechinoidea

Acroechinoidea (15733681)

Children (6 direct children, 39 direct and indirect children):

Aspidodiadematoida

Micropygoida (tree size 5)

Clypeidae (tree size 24)

Pelanechinidae (tree size 4)

Pedinothuria

Tiarotropus