Children (13 direct children, 881 direct and indirect children):
Monocelididae
(tree size 308)
Hofsteniidae
(tree size 10)
Plagiostomidae
(tree size 182)
Archimonocelididae
(tree size 5)
Coelogynoporidae
(tree size 79)
Nematoplanidae
(tree size 29)
Otoplanidae
(tree size 209)
Polystyliphoridae
(tree size 13)
Lithophora
(tree size 32)
Nemertoplanidae
Prosogynopora
(tree size 1)
Pristix
Unguiphora