Echinostomata

Echinostomata is a suborder of the parasitic flatworm order Plagiorchiida. The suborder contains numerous species that are parasitic in humans.

Families
All families are in the superfamily Echinostomatoidea Looss, 1902. It has been synonymised with Cyclocoeloidea Stossich, 1902.
 * Calycodidae Dollfus, 1929
 * Cyclocoelidae Stossich, 1902
 * Echinochasmidae Odhner, 1910
 * Echinostomatidae Looss, 1899
 * Eucotylidae Cohn, 1904
 * Fasciolidae Railliet, 1895
 * Himasthlidae Odhner, 1910
 * Philophthalmidae Looss, 1899
 * Psilostomidae Looss, 1900
 * Rhytidodidae Odhner, 1926
 * Typhlocoelidae Harrah, 1922