Related how?

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)
Cidaroidea
Cidaroida
Cidaridae
Goniocidarinae

Rhopalocidaris (18585965)

Children (3 direct children, 7 direct and indirect children):

Rhopalocidaris gracilis

Rhopalocidaris rosea (tree size 2)

Rhopalocidaris hirsutispina (tree size 2)