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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
Irregularia
Neognathostomata

Nucleolitidae (16667266)

Children (16 direct children, 82 direct and indirect children):

Nucleolites (tree size 8)

Bothryopneustes (tree size 6)

Clypeopygus (tree size 4)

Crotoclypeus (tree size 1)

Ochetus

Phyllobrissus (tree size 8)

Catopygus (tree size 21)

Thigopygus

Acromazus

Asterobrissus (tree size 1)

Echinobrissus (tree size 17)

Lophopygus

Clitopygus

Taphropygus

Anthobrissus

Trochalia