Children (12 direct children, 7952 direct and indirect children):
Polycladida
(tree size 1963)
Seriata
(tree size 932)
Tricladida
(tree size 3274)
Catenulida
(tree size 200)
Macrostomida
(tree size 399)
Prolecithophora
(tree size 179)
Lecithoepitheliata
(tree size 67)
Genostomatidae
(tree size 7)
Macrostomorpha
(tree size 7)
Neorhabdocoela
(tree size 911)
Nemertodermata
Proplicastomata
(tree size 1)