| | Fasciolidae, family Fasciolidae; Schistosomatidae, family Schistosomatidae; Taeniidae, family Taeniidae; Ascaridae, family Ascaridae; Oxyuridae, family Oxyuridae; Cephalobidae, family Cephalobidae; Tylenchidae, family Tylenchidae; Ancylostomatidae, family Ancylostomatidae; Filariidae, family Filariidae; Dracunculidae, family Dracunculidae; Branchiobdellidae, family Branchiobdellidae; Terebellidae, family Terebellidae; Hirudinidae, family Hirudinidae |