Children (13 direct children, 184 direct and indirect children):
Psolus
(tree size 93)
Psolidium
(tree size 63)
Lissothuria
(tree size 10)
Neopsolidium
(tree size 2)
Ekkentropelma
(tree size 2)
Ceto
(tree size 1)
Monilipsolinae
Georisia
Hypopsolus
Lepidopsolus
Lophothuria
Stolinus
Thyonepsolus