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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
Holectypoida

Holectypidae (22583434)

Children (4 direct children, 42 direct and indirect children):

Holectypus (tree size 25)

Coenholectypus (tree size 5)

Discoides (tree size 8)

Philolectypus