A
family of flukes of the
class trematoda found in the
intestinal tract and
liver of animals and man. Some of the
genera are homalagaster, gastrodiscus, paramphistomum, watsonius, nilocotyle, gigantocotyle, gastrothylax, macropotrema, ceylonocotyle, zygocotyle, cotylophoron, and calicophoron.