Trematoda genera

Ribeiroia () is a genus of trematode parasites that sequentially infect freshwater snails in the family Planorbidae (ramshorn snails) as first intermediate hosts, fish and larval amphibians as second intermediate hosts, and birds and mammals as definitive hosts (see ). In North America, infection by Ribeiroia has been linked to amphibians with limb malformations. The connection between parasitic infection and limb malformations has generated questions about (a) whether parasite-induced malformations in amphibians are increasing (see ), and (b) the consequences of such abnormalities for amphibi

Cotylurus is a genus of trematodes belonging to the family Strigeidae.

Allocreadium is a genus of trematodes belonging to the family Allocreadiidae. The genus was first described by Arthur Looss in 1900. The genus has almost cosmopolitan distribution.

Hexagrammia is a genus of trematodes in the family Opecoelidae.