Children (10 direct children, 25 direct and indirect children):
Placocoeniidae
Pamiroseriidae
(tree size 9)
Heliastraeidae
Columastreidae
Misistellidae
(tree size 2)
Diplocteniopsidae
Isastreidae
Phyllocoeniidae
Tropidastraeidae
Placosmiliidae
(tree size 4)