Children (17 direct children, 67 direct and indirect children):
Heterocentrotus
(tree size 2)
Echinometra
(tree size 17)
Echinostrephus
(tree size 3)
Heliocidaris
(tree size 10)
Colobocentrotus
(tree size 6)
Zenocentrotus
(tree size 3)
Podophora
(tree size 2)
Selenechinus
(tree size 1)
Pachechinus
(tree size 2)
Evechinus
(tree size 2)
Caenocentrotus
(tree size 1)
Plagiechinus
Pachycentrotus
(tree size 1)
Anthocidaris
Acrocladia
Ellipsechinus
Toxocidaris