Acanthostomum imbutiforme (Molin, 1859) Gohar, 1934 accepted as Timoniella imbutiforme (Molin, 1859) Brooks, 1980 accepted as Timoniella imbutiformis (Molin, 1859) Brooks, 1980 (additional source)
Anisocoelium capitellatum (Rudolphi, 1819) Lühe, 1900 (redescription)
Aphalloides coelomicola Dollfus, Chabaud & Golvan, 1957 (redescription)
Aphanurus stossichii (Monticelli, 1891) Looss, 1907 (additional source)
Asymphylodora demeli Markowski, 1935 (additional source)
Bacciger grandispinatus Naidenova, 1970 (redescription)
Bucephalus marinus Vlasenko, 1931 (additional source)
Bucephalus polymorphus von Baer, 1827 (additional source)
Cryptocotyle concava (Creplin, 1825) Lühe, 1899 (additional source)
Cryptocotyle lingua (Creplin, 1825) Fischoeder, 1903 (additional source)
Diphterostomum brusinae (Stossich, 1888) Stossich, 1904 (biology source)
Galactosomum lacteum (Jägerskiöld, 1896) Looss, 1899 (additional source)
Galactosomum phalacrocoracis Yamaguti, 1939 (additional source)
Helicometra fasciata (Rudolphi, 1819) Odhner, 1902 (additional source)
Helicometra pulchella (Rudolphi, 1819) Odhner, 1902 (redescription)
Lecithaster gibbosus (Rudolphi, 1802) Lühe, 1901 accepted as Opistholecithum gibbosum (Rudolphi, 1802) Vainutis & Voronova, 2025 accepted as Alloopistholecithum gibbosum (Rudolphi, 1802) Vainutis & Voronova, 2025 (taxonomy source)
Magnibursatus skrjabini (Vlasenko, 1931) Naidenova, 1969 (redescription)
Maritrema echinocirrata Leonov, 1958 (redescription)
Microphallus papillorobustus (Rankin, 1940) Baer, 1944 (redescription)
Proctoeces maculatus (Looss, 1901) Odhner, 1911 (redescription)
Stephanostomum bicoronatum (Stossich, 1883) Fuhrmann, 1928 (redescription)