Syncoeliidae
(tree size 21)
Bunocotylidae
Derogenidae
(tree size 132)
Lecithasteridae
(tree size 162)
Bathycotylidae
(tree size 3)
Sclerodistomidae
(tree size 57)
Sclerodistomoididae
(tree size 2)
Gonocercidae
(tree size 2)
Cortrematidae
Paraccacladiidae