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)
Perischoechinoidea
Echinocystitoida
Echinocystitidae (33135115)
Children (4 direct children, 4 direct and indirect children):
Echinocystites
Gotlandechinus
Rhenechinus
Cystocidaris