Allonematobothriini Pozdnyakov, 1993 (identification resource)
Allopseudocolocyntotrema Yamaguti, 1970 (identification resource)
Coeliotrema Yamaguti, 1938 (identification resource)
Coeliotrematini Pozdnyakov, 1993 (identification resource)
Colocyntotrematini Yamaguti, 1958 (identification resource)
Didymocystis Ariola, 1902 (identification resource)
Didymodiclininae Pozdnyakov, 1993 (identification resource)
Didymodiclinus Pozdnyakov, 1993 (identification resource)
Didymosulcus Pozdnyakov, 1990 (identification resource)
Didymozoidae Monticelli, 1888 (identification resource)
Didymozoinae Monticelli, 1888 (identification resource)
Didymozoini Monticelli, 1888 (identification resource)
Didymozoon Taschenberg, 1879 (identification resource)
Gonapodasmiinae Ishii, 1935 (identification resource)
Gonapodasmiini Ishii, 1935 (identification resource)
Gonapodasmius Ishii, 1935 (identification resource)
Halvorsenius Gibson, MacKenzie & Cottle, 1981 (identification resource)
Koellikeria Cobbold, 1860 (identification resource)
Koellikeriinae Ishii, 1935 (identification resource)
Koellikeriini Ishii, 1935 (identification resource)
Koellikerioides Yamaguti, 1970 (identification resource)
Maccallumtrema Yamaguti, 1970 (identification resource)
Metanematobothrium Yamaguti, 1938 (identification resource)
Nematobothriinae Ishii, 1935 (identification resource)
Nematobothriini Ishii, 1935 (identification resource)
Nematobothrium van Beneden, 1858 (identification resource)
Neodidymozoini Yamaguti, 1970 (identification resource)
Oesophagocystis Yamaguti, 1970 (identification resource)
Platocystis Yamaguti, 1938 (identification resource)
Unitubulotestini Pozdnyakov, 1993 (identification resource)
Unitubulotestis Yamaguti, 1953 (identification resource)
Wedlia Cobbold, 1860 (identification resource)
Wedliini Pozdnyakov, 1993 (identification resource)