Hadwenius
Animalia | Platyhelminthes | Trematoda | Echinostomida | Campululidae | Hadwenius
Synthesium
Biota | Animalia | Platyhelminthes | Rhabditophora | Neodermata | Trematoda | Digenea | Plagiorchiida | Xiphidiata | Brachycladioidea | Brachycladiidae | Brachycladiinae | Synthesium
|  | Minot, 1876 | Ehlers, 1985 | Ehlers, 1985 |  | Carus, 1863 | La Rue, 1957 | Olson, Cribb, Tkach, Bray & Littlewood, 2003 | Odhner, 1905 | Odhner, 1905 | Odhner, 1905 | Stunkard & Alvey, 1930