Pristiorhynchus
(tree size 1)
Otobothrium
(tree size 20)
Symbothriorhynchus
(tree size 2)
Proemotobothrium
(tree size 3)
Fossobothrium
(tree size 1)
Poecilancistrium
(tree size 1)
Diplootobothrium
(tree size 2)
Ancipirhynchus
(tree size 1)
Olgaella
(tree size 1)
Iobothrium
(tree size 1)