Children (25 direct children, 5804 direct and indirect children):
Euechinoidea
(tree size 4953)
Perischoechinoidea
(tree size 14)
Cidaroidea
(tree size 747)
Palechinoidea
Palaechinoidea
(tree size 12)
Bothriocidaroida
(tree size 11)
Hemicidaroida
(tree size 3)
Echinothurioidea
Diadematoidea
Triadotiaroida
Rhoechinus
Proterocidaridae
(tree size 6)
Circopeltis
(tree size 4)
Conoclypeus
(tree size 1)
Radiolus
(tree size 12)
Aulechinus
(tree size 1)
Lepidocentridae
(tree size 13)
Anaulocidaris
(tree size 2)
Echinophyces
Egyptechinus
Glyptodiadema
Thylechinus
Timorocidaris
Infraclypeus
Pleurechinus