Children (9 direct children, 330 direct and indirect children):
Leptochitonidae
(tree size 277)
Hanleyidae
(tree size 27)
Nierstraszellidae
(tree size 4)
Ferreiraellidae
Abyssochitonidae
(tree size 13)
Acutichitonidae
Gryphochitonidae
Ochmazochitonidae
Crassitudochitonidae