(Monopisthocotylea) (Monopisthocotylea) is a biological order of the phylum Platyhelminthes (Flatworms) and class Trematoda.
Acanthocotylidae
Bothitrematidae
Calceostomatidae
Capsalidae
Dactylogyridae
Dionchidae
Diplectanidae
Gyrodactylidae
Loimoidae
Microbothriidae
Monocotylidae
Protogyrodactylidae
Tetraonchidae
Tetraonchoididae
Udonellidae
Aspidogastrea
Azygiida
Echinostomida
Monopisthocotylea
Opisthorchiida
Plagiorchiida
Polyopisthocotylea
Strigeata
Strigeatida