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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
Atelostomata
Cassiduloida
Apatopygidae

Nucleopygus (28087686)

Children (17 direct children, 19 direct and indirect children):

Nucleopygus haydeni

Nucleopygus atlanticus (tree size 1)

Nucleopygus bashibulakensis

Nucleopygus calcalosus

Nucleopygus gallagheri

Nucleopygus gangbensis

Nucleopygus geayi

Nucleopygus kailensis

Nucleopygus lebescontei (tree size 1)

Nucleopygus magnus

Nucleopygus parvus

Nucleopygus peltitipos

Nucleopygus piveteaui

Nucleopygus platypetalus

Nucleopygus salgadoi

Nucleopygus sanctaluciae

Nucleopygus tamarindensis