Acanthostomum gnerii Szidat, 1954 accepted as Proctocaecum gnerii (Szidat, 1954) Lamothe-Argumedo & Ponciano-Rodriguez, 1986 (redescription)
Amazonadistoma negrensis Thatcher, 1979 accepted as Amazonadistoma negrense Thatcher, 1979 (redescription)
Anavilhanatrema robusta Thatcher, 1992 accepted as Anavilhanatrema robustum Thatcher, 1992 (redescription)
Annelamphistoma elegans Thatcher, Sey & Jégu, 1996 (redescription)
Antorchis lintoni Travassos, Artigas & Pereira, 1928 (redescription)
Bacciger pellonae Thatcher, 1992 (redescription)
Bellumcorpus major Kohn, 1962 accepted as Bellumcorpus majus Kohn, 1962 (redescription)
Betamphistoma jariense Thatcher & Jégu, 1996 (redescription)
Brasicystis bennetti Thatcher, 1979 (redescription)
Caballerotrema arapaimense Thatcher, 1980 (redescription)
Caballerotrema aruanense Thatcher, 1980 (redescription)
Caballerotrema brasiliense Prudhoe, 1960 (redescription)
Chalcinotrema lucieni Brooks, 1977 (redescription)
Chalcinotrema ruedasueltensis Thatcher, 1978 accepted as Saccocoelioides ruedasueltensis (Thatcher, 1978) Curran, Pulis, Andres & Overstreet, 2018 (redescription)
Chalcinotrema salobrensis Teixeira de Freitas, 1947 accepted as Chalcinotrema salobrense Teixeira de Freitas, 1947 (additional source)
Cladocystis intestinalis Vaz, 1932 accepted as Neocladocystis intestinalis (Vaz, 1932) Manter & Pritchard, 1969 (redescription)
Colocladorchis ventrastomis Thatcher, 1979 (redescription)
Crassicutis chuscoi (Pearse, 1920) Peters, 1957 (redescription)
Crassicutis cichlasomae Manter, 1936 (redescription)
Crassicutis opisthoseminis Bravo-Hollis & Arroyo, 1962 accepted as Crassicutis cichlasomae Manter, 1936 (redescription)
Crassicutis wallini (Pearse, 1920) Peters, 1957 (redescription)
Crepidostomum macrorchis Szidat, 1954 accepted as Auriculostoma macrorchis (Szidat, 1954) Scholz, Aguirre-Macedo & Choudhury, 2004 accepted as Creptotrema macrorchis (Szidat, 1954) Franceschini, Aguiar, Zago, de Oliveira Fadel Yamada, Bertholdi Ebert & da Silva, 2021 (redescription)
Crepidostomum platense Szidat, 1954 accepted as Auriculostoma platense (Szidat, 1954) Scholz, Aguirre-Macedo & Choudhury, 2004 accepted as Creptotrema platense (Szidat, 1954) Franceschini, Aguiar, Zago, de Oliveira Fadel Yamada, Bertholdi Ebert & da Silva, 2021 (additional source)
Creptotrema creptotrema Travassos, Artigas & Pereira, 1928 (redescription)
Creptotrema dispar Teixeira de Freitas, 1941 accepted as Creptotrematina dispar (Teixeira de Freitas, 1941) Manter, 1962 (additional source)
Curimatrema microscopica Thatcher, 2000 accepted as Curimatrema microscopicum Thatcher, 2000 (redescription)
Curumai curumai Travassos, 1961 (redescription)
Dadayius marenzelleri (Daday, 1907) Fukui, 1929 (redescription)
Dadayius pacuensis Thatcher, Sey & Jégu, 1996 (redescription)
Dadaytrema elongata Vaz, 1932 accepted as Dadaytrema elongatum Vaz, 1932 accepted as Dadaytrema oxycephalum (Diesing, 1850) Vaz, 1932 (additional source)
Dadaytrema oxycephala (Diesing, 1836) Vaz, 1932 accepted as Dadaytrema oxycephalum (Diesing, 1850) Vaz, 1932 (redescription)
Dadaytremoides grandistomis Thatcher, 1979 (redescription)
Deltamphistoma pitingaense Thatcher & Jégu, 1996 (redescription)
Dendrorchis neivai Travassos, 1926 (redescription)
Denticauda quadrangulata (Daday, 1906) Fukui, 1929 (redescription)
Doradamphistoma bacuensis Thatcher, 1999 accepted as Doradamphistoma bacuense Thatcher, 1999 (redescription)
Eocreadium intermedium Szidat, 1954 accepted as Crassicutis intermedia (Szidat, 1954) Bray, de Chambrier & Vaucher, 1996 (redescription)
Gammamphistoma collaris Thatcher & Jégu, 1996 accepted as Gammamphistoma collare Thatcher & Jégu, 1996 (redescription)
Genolopa magnacirrus Thatcher, 1996 (redescription)
Glandulorhynchus turgidus Thatcher, 1999 (redescription)
Gonocercella magnifica Szidat, 1954 accepted as Thometrema magnificum (Szidat, 1954) Gibson & Bray, 1979 (redescription)
Halipegus dubius Klein, 1905 (redescription)
Halipegus genarchella (Travassos, Artigas & Pereira, 1928) Manter, 1934 accepted as Genarchella genarchella Travassos, Artigas & Pereira, 1928 (additional source)
Halipegus parvus (Travassos, Artigas & Pereira, 1928) accepted as Genarchella parva Travassos, Artigas & Pereira, 1928 (additional source)
Halipegus tropicus (Manter, 1936) Sogandares-Bernal, 1955 accepted as Genarchella genarchella Travassos, Artigas & Pereira, 1928 (additional source)
Iheringtrema iheringi Travassos, 1947 (redescription)
Inpamphistoma papillatum Thatcher, Sey & Jégu, 1996 (redescription)
Kalipharynx piramboae Boeger & Thatcher, 1983 (redescription)
Kalitrema kalitrema Travassos, 1933 (redescription)
Lecithobotrioides elongatus Thatcher, 1999 accepted as Saccocoelioides guaporense Curran, Pulis, Andres & Overstreet, 2018 (redescription)
Lecithobotrioides mediacanoensis Thatcher & Dossman M., 1974 accepted as Saccocoelioides elongatus Szidat, 1954 (redescription)
Magnivitellinum simplex Kloss, 1966 (redescription)
Megacoelium plecostomi Szidat, 1954 (additional source)
Megacoelium spinicavum Thatcher & Varella, 1981 (redescription)
Megacoelium spinispecum Thatcher & Varella, 1981 accepted as Megacoelium spinicavum Thatcher & Varella, 1981 (additional source)
Micramphistoma ministoma Thatcher, 1992 (redescription)
Myleustrema concavatum Thatcher & Jégu, 1998 (redescription)
Pacudistoma guianensis Thatcher & Jégu, 1998 accepted as Pacudistoma guianense Thatcher & Jégu, 1998 (redescription)
Pacudistoma turgida Thatcher, 1992 accepted as Pacudistoma turgidum Thatcher, 1992 (redescription)
Palaeocryptogonimus claviformis Szidat, 1954 (redescription)
Paralecithobotrys brasiliensis Teixeira de Freitas, 1948 (redescription)
Paraproctotrema delicata Thatcher, 1996 accepted as Paraproctotrema delicatum Thatcher, 1996 (redescription)
Pararhipidocotyle jeffersoni Kohn, 1970 accepted as Rhipidocotyle jeffersoni (Kohn, 1970) Overstreet & Curran, 2002 (redescription)
Parspina argentinensis (Szidat, 1954) Sogandares-Bernal, 1959 (redescription)
Paurorhynchus schubarti Kohn, 1963 accepted as Bellumcorpus schubarti (Kohn, 1963) Kohn, 1970 (redescription)
Phyllodistomoides duncani Brooks, 1977 (redescription)
Procaudotestis uruguayensis Szidat, 1954 (redescription)
Pronamphistoma cichlasomae Thatcher, 1992 (redescription)
Prosorhynchus costai Travassos, Artigas & Pereira, 1928 (additional source)
Prosorhynchus piranhus Thatcher, 1999 (redescription)
Prosthenhystera obesa (Diesing, 1850) Travassos, 1922 (redescription)
Pseudocladorchis cylindricus (Diesing, 1836) Daday, 1907 (redescription)
Pseudocladorchis ferrumequinus (Diesing, 1836) Stunkard, 1925 (additional source)
Pseudodiplodiscus cornu (Diesing, 1839) Manter, 1962 (redescription)
Pseudoparabaris parabaris (Travassos, 1922) Yamaguti, 1958 (redescription)
Rondotrema microvitellarum Thatcher, 1999 (redescription)
Saccocoelioides leporinodus Thatcher, 1978 accepted as Saccocoelioides saccodontis Thatcher, 1978 (redescription)
Saccocoelioides magniovatus Szidat, 1954 (additional source)
Saccocoelioides magnorchis Thatcher, 1978 (additional source)
Saccocoelioides nanii Szidat, 1954 (additional source)
Saccocoelioides octavus Szidat, 1970 (additional source)
Saccocoelioides quintus Thatcher, 1978 (additional source)
Saccocoelioides rotundus Thatcher & Jégu, 1996 (redescription)
Saccocoelioides saccodontis Thatcher, 1978 (redescription)
Saccocoelioides szidati Travassos, Freitas & Kohn, 1969 (additional source)
Sanguinicola argentinensis Szidat, 1951 (additional source)
Sanguinicola coelomicola (Szidat, 1951) accepted as Plehniella coelomicola Szidat, 1951 (redescription)
Sphericomonorchis spinulosus Thatcher, 1996 (redescription)
Travassosinia dilatata (Daday, 1907) Vaz, 1932 (redescription)
Unicoelium prochilodorum Thatcher & Dossman, 1975 (redescription)
Witenbergia witenbergi Vaz, 1932 (redescription)
Zetamphistoma compacta Thatcher & Jégu, 1996 accepted as Zetamphistoma compactum Thatcher & Jégu, 1996 accepted as Dadaytrema compactum (Thatcher & Jégu, 1996) Jones, 2005 (redescription)
Zonocotyle bicaecata Travassos, 1947 (redescription)
Zonocotyloides Padilha, 1978 accepted as Zonocotyle Travassos, 1947 (redescription)