Acanthostomoides apophalliformis Szidat, 1956 (additional source)
Acanthostomum gnerii Szidat, 1954 accepted as Proctocaecum gnerii (Szidat, 1954) Lamothe-Argumedo & Ponciano-Rodriguez, 1986 (additional source)
Acanthostomum spiniceps (Looss, 1896) Looss, 1899 (additional source)
Accacladium serpentulum Odhner, 1928 (additional source)
Accacladocoelium alveolatum Robinson, 1934 (additional source)
Accacladocoelium macrocotyle (Diesing, 1858) Robinson, 1934 (additional source)
Accacoelium contortum (Rudolphi, 1819) Looss, 1899 (additional source)
Allocreadium centropomi Fischthal & Nasir, 1974 (additional source)
Allocreadium lobatum Wallin, 1909 (additional source)
Allocreadium patagonicum Shimazu, Urawa & Coria, 2000 (additional source)
Allocreadium pichi Floress, Brugni & Ostrowskt de Núñez, 2004 (basis of record)
Alphamphistoma Thatcher & Jégu, 1996 (basis of record)
Alphamphistoma canoeforma Thatcher & Jégu, 1996 accepted as Alphamphistoma canoeformum Thatcher & Jégu, 1996 (basis of record)
Amazonadistoma Thatcher, 1979 (basis of record)
Amazonadistoma negrensis Thatcher, 1979 accepted as Amazonadistoma negrense Thatcher, 1979 (basis of record)
Amphistoma attenuatum Diesing, 1836 (basis of record)
Anaporrhutum albidum Brandes in Ofenheim, 1900 (additional source)
Anavilhanatrema robusta Thatcher, 1992 accepted as Anavilhanatrema robustum Thatcher, 1992 (basis of record)
Annelamphistoma Thatcher, Sey & Jégu, 1996 (basis of record)
Annelamphistoma elegans Thatcher, Sey & Jégu, 1996 (basis of record)
Antorchis lintoni Travassos, Artigas & Pereira, 1928 (additional source)
Aponurus laguncula Looss, 1907 (additional source)
Aponurus pyriformis (Linton, 1910) Overstreet, 1973 (additional source)
Aporocotyle argentinensis Smith, 1969 (additional source)
Aporocotyle australis Fernández & Durán, 1985 (additional source)
Aporocotyle garciai Tantaleán & Martínez, 1990 (additional source)
Aporocotyle keli Villalba & Fernandez, 1986 (additional source)
Aporocotyle kuri Villalba & Fernandez, 1986 (additional source)
Aporocotyle wilhelmi Villalba & Fernández, 1986 (additional source)
Aporocotyle ymakara Villalba & Fernández, 1986 (additional source)
Aspidocotylus cochleariformis Diesing, 1838 (additional source)
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 (additional source)
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)
Auriculostoma stenopteri (Mañé-Garzón & Gascón, 1973) Scholz, Aguirre-Macedo & Choudhury, 2004 accepted as Creptotrema stenopteri (Mañé-Garzón & Gascón, 1973) Franceschini, Aguiar, Zago, de Oliveira Fadel Yamada, Bertholdi Ebert & da Silva, 2021 (additional source)
Bacciger astyanactis Lunaschi, 1998 (additional source)
Bacciger delvalleensis Lunaschi, 2001 (additional source)
Bacciger pellonae Thatcher, 1992 (additional source)
Bathycotyle Darr, 1902 (additional source)
Bellumcorpus majus Kohn, 1962 (additional source)
Bellumcorpus schubarti (Kohn, 1963) Kohn, 1970 (additional source)
Betamphistoma Thatcher & Jégu, 1996 (basis of record)
Betamphistoma jariense Thatcher & Jégu, 1996 (basis of record)
Bianium plicitum (Linton, 1928) Stunkard, 1931 (additional source)
Brachyenteron magnibursatum Gaevskaya & Rodjuk, 1983 (additional source)
Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 (additional source)
Brachyphallus parvus (Manter, 1947) Skrjabin & Guschanskaja, 1955 (additional source)
Brasicystis bennetti Thatcher, 1979 (additional source)
Bucephalus australis (Szidat, 1961) Yamaguti, 1971 accepted as Prosorhynchus australis Szidat, 1961 (additional source)
Bucephalus margaritae Ozaki & Ishibashi, 1934 (additional source)
Bucephalus solitarius Kohn, 1966 (additional source)
Bucephalus urophyci Szidat, 1961 (additional source)
Bunocotyle sudatlantica Parukhin, 1976 (additional source)
Caballerotrema Prudhoe, 1960 (basis of record)
Caballerotrema annulatum (Diesing, 1850) Ostrowski de Núñez & Sattman, 2002 accepted as Alobophora annulata (Diesing, 1850) Cajiao-Mora & Bullard in Cajiao-Mora, Brule, Warren, Ksepka, Dutton & Bullard, 2024 (basis of record)
Caballerotrema arapaimense Thatcher, 1980 (basis of record)
Caballerotrema aruanense Thatcher, 1980 (basis of record)
Caballerotrema brasiliense Prudhoe, 1960 (basis of record)
Caballerotrema piscicola (Stunkard, 1960) Kostadinova & Gibson, 2001 accepted as Caballerotrema brasiliense Prudhoe, 1960 (basis of record)
Cainocreadium oscitans (Linton, 1910) Cribb, 2005 (additional source)
Cardicola brasiliensis Knoff & Amato, 1992 (additional source)
Cardicola tropicus (Manter, 1940) Lebedev & Mamaev, 1968 accepted as Psettarium tropicum Manter, 1940 (additional source)
Catarinatrema verrucosum Teixeira de Freitas & Santos, 1971 (additional source)
Chabaudtrema Kohn, 1970 accepted as Prosorhynchus Odhner, 1905 (basis of record)
Chalcinotrema lucieni Brooks, 1977 (basis of record)
Chalcinotrema mugilicola (Shireman, 1964) Conroy & Conroy, 1986 accepted as Intromugil mugilicolus (Shireman, 1964) Overstreet & Curran, 2005 accepted as Intromugil mugilicola (Shireman, 1964) Overstreet & Curran, 2005 (basis of record)
Chalcinotrema platense (Lunaschi, 1984) Overstreet & Curran, 2005 (basis of record)
Chalcinotrema ruedasueltensis Thatcher, 1978 accepted as Saccocoelioides ruedasueltensis (Thatcher, 1978) Curran, Pulis, Andres & Overstreet, 2018 (additional source)
Chalcinotrema salobrensis Teixeira de Freitas, 1947 accepted as Chalcinotrema salobrense Teixeira de Freitas, 1947 (basis of record)
Chalcinotrema thatcheri Kohn, Fernandes & Gibson, 1999 (basis of record)
Chiorchis dilatatus Daday, 1907 accepted as Travassosinia dilatata (Daday, 1907) Vaz, 1932 (basis of record)
Choanodera caulolatili Manter, 1940 (additional source)
Cladocystis intestinalis Vaz, 1932 accepted as Neocladocystis intestinalis (Vaz, 1932) Manter & Pritchard, 1969 (basis of record)
Coeliodidymocystis kamegaii Yamaguti, 1970 accepted as Didymocystis kamegaii (Yamaguti, 1970) Pozdnyakov, 1996 (additional source)
Coitocaecum extremum (Travassos, Freitas & Burnheim, 1965) Yamaguti, 1971 (basis of record)
Coitocaecum tropicum Manter, 1940 (additional source)
Colocladorchis Thatcher, 1979 (basis of record)
Colocladorchis ventrastomis Thatcher, 1979 (basis of record)
Conohelmins venezuelensis Fischthal & Nasir, 1974 (additional source)
Copiatestes filiferus (Leuckart in Sars, 1885) Gibson & Bray, 1977 (additional source)
Crassicutis chuscoi (Pearse, 1920) Peters, 1957 (additional source)
Crassicutis cichlasomae Manter, 1936 (additional source)
Crassicutis intermedius (Szidat, 1954) Bray, de Chambrier & Vaucher, 1996 accepted as Crassicutis intermedia (Szidat, 1954) Bray, de Chambrier & Vaucher, 1996 (basis of record)
Crassicutis wallini (Pearse, 1920) Peters, 1957 (additional source)
Creptotrema creptotrema Travassos, Artigas & Pereira, 1928 (basis of record)
Creptotrema dispar Teixeira de Freitas, 1941 accepted as Creptotrematina dispar (Teixeira de Freitas, 1941) Manter, 1962 (basis of record)
Creptotrema dissimilis Teixeira de Freitas, 1941 accepted as Creptotrematina dissimilis (Teixeira de Freitas, 1941) Yamaguti, 1954 (basis of record)
Creptotrema lynchi Brooks, 1976 accepted as Creptotrema creptotrema Travassos, Artigas & Pereira, 1928 (basis of record)
Creptotrema paraensis Vicente, Santos & Souza, 1978 accepted as Creptotrema paraense Vicente, Santos & Souza, 1978 (basis of record)
Creptotrema pati Lunaschi, 1985 (basis of record)
Creptotrematina Yamaguti, 1954 (basis of record)
Creptotrematina dispar (Teixeira de Freitas, 1941) Manter, 1962 (basis of record)
Creptotrematina dissimilis (Teixeira de Freitas, 1941) Yamaguti, 1954 (basis of record)
Crocodilicola pseudostoma (Willemoes-Suhm, 1870) Poche, 1926 (basis of record)
Culuwiya beauforti (Hunter & Thomas, 1961) Overstreet & Curran, 2005 accepted as Saccocoelioides beauforti (Hunter & Thomas, 1961) Overstreet, 1971 (additional source)
Culuwiya overstreeti (Fernandez Bargiela, 1987) Overstreet & Curran, 2005 accepted as Saccocoelioides overstreeti Fernandez Bargiela, 1987 (additional source)
Culuwiya papernai (Fernandez Bargiela, 1987) Curran & Overstreet, 2005 accepted as Saccocoelioides papernai Fernández Bargiela, 1987 accepted as Saccocoelioides overstreeti Fernandez Bargiela, 1987 (additional source)
Culuwiya tilapiae (Nasir & Gómez, 1976) Overstreet & Curran, 2005 accepted as Saccocoelioides tilapiae (Nasir & Gómez, 1976) Curran, Pulis, Andres & Overstreet, 2018 (additional source)
Curimatrema Thatcher, 2000 (basis of record)
Curimatrema microscopica Thatcher, 2000 accepted as Curimatrema microscopicum Thatcher, 2000 (basis of record)
Curumai Travassos, 1961 (additional source)

Argentina for Acanthostomoides apophalliformis Szidat, 1956 
Argentina for Acanthostomum gnerii Szidat, 1954 
Argentina for Allocreadium pichi Floress, Brugni & Ostrowskt de Núñez, 2004 
Argentina for Auriculostoma macrorchis (Szidat, 1954) Scholz, Aguirre-Macedo & Choudhury, 2004 
Argentina for Auriculostoma platense (Szidat, 1954) Scholz, Aguirre-Macedo & Choudhury, 2004 
Argentina for Chalcinotrema platense (Lunaschi, 1984) Overstreet & Curran, 2005 
Argentina for Chalcinotrema salobrensis Teixeira de Freitas, 1947 
Argentina for Crassicutis intermedia (Szidat, 1954) Bray, de Chambrier & Vaucher, 1996 
Argentina for Creptotrema creptotrema Travassos, Artigas & Pereira, 1928 
Argentina for Creptotrema lynchi Brooks, 1976 
Argentina for Creptotrema pati Lunaschi, 1985 
Argentina for Creptotrematina dispar (Teixeira de Freitas, 1941) Manter, 1962 
Argentina for Creptotrematina dissimilis (Teixeira de Freitas, 1941) Yamaguti, 1954 
Argentina for Curumai curumai Travassos, 1961 
Argentina for Dadaytrema gracilis Lunaschi, 1989 
Argentina for Dadaytrema oxycephalum (Diesing, 1850) Vaz, 1932 
Argentina for Dadaytremoides parauchenipteri Lunaschi, 1989 
Argentina for Deropegus patagonicus (Szidat, 1956) Shimazu, Urawa & Coria, 2000 
Argentina for Genarchella parva Travassos, Artigas & Pereira, 1928 
Argentina for Glypthelmins pseudium (Mañé-Garzón & Holcman-Spector, 1967) Travassos, Freitas & Kohn, 1960 
Argentina for Kalipharynx piramboae Boeger & Thatcher, 1983 
Argentina for Limnoderetrema macrophallus (Szidat & Nani, 1951) Torres & Neira, 1991 
Argentina for Magnivitellinum simplex Kloss, 1966 
Argentina for Megacoelium plecostomi Szidat, 1954 
Argentina for Microrchis oligovitellum Lunaschi, 1987 
Argentina for Palaeocryptogonimus claviformis Szidat, 1954 
Argentina for Parspina argentinensis (Szidat, 1954) Sogandares-Bernal, 1959 
Argentina for Phyllodistomum spatula Odhner, 1902 
Argentina for Polylekithum percai Ostrowski de Núñez, Brugni & Viozzi, 2000 
Argentina for Posterotestes Ostrowski de Nunez, Brugni & Flores, 2003 
Argentina for Procaudotestis uruguayensis Szidat, 1954 
Argentina for Prosthenhystera obesa (Diesing, 1850) Travassos, 1922 
Argentina for Saccocoelioides antonioi Lunaschi, 1984 
Argentina for Saccocoelioides bacilliformis Szidat, 1973 
Argentina for Saccocoelioides carolae Lunaschi, 1984 
Argentina for Saccocoelioides elongatus Szidat, 1954 
Argentina for Saccocoelioides magniovatus Szidat, 1954 
Argentina for Saccocoelioides magnus Szidat, 1954 
Argentina for Saccocoelioides nanii Szidat, 1954 
Argentina for Saccocoelioides quintus Thatcher, 1978 
Argentina for Saccocoelioides szidati Travassos, Freitas & Kohn, 1969 
Argentina for Sanguinicola argentinensis Szidat, 1951 
Argentina for Sanguinicola coelomicola (Szidat, 1951) 
Argentina for Steganoderma valchetensis Etchegoin, Cremonte & Escalante, 2002 
Argentina for Thometrema bonariensis Lunaschi, 1989 
Argentina for Thometrema overstreeti (Brooks, Mayes & Thorson, 1979) Lunaschi, 1989 
Argentina for Travassosinia dilatata (Daday, 1907) Vaz, 1932 
Argentina for Zonocotyle bicaecata Travassos, 1947 
Argentinean part of the South Atlantic Ocean for Aporocotyle argentinensis Smith, 1969 
Argentinean part of the South Atlantic Ocean for Brachyphallus crenatus (Rudolphi, 1802) Odhner, 1905 
Argentinean part of the South Atlantic Ocean for Brachyphallus parvus (Manter, 1947) Skrjabin & Guschanskaja, 1955 
Argentinean part of the South Atlantic Ocean for Bucephalus australis (Szidat, 1961) Yamaguti, 1971 
Argentinean part of the South Atlantic Ocean for Derogenes parvus Szidat, 1950 of Szidat (1965) 
Argentinean part of the South Atlantic Ocean for Derogenes varicus (Müller, 1784) Looss, 1901 
Argentinean part of the South Atlantic Ocean for Dinurus breviductus Looss, 1907 
Argentinean part of the South Atlantic Ocean for Diphterostomum americanum Manter, 1947 
Argentinean part of the South Atlantic Ocean for Elytrophalloides oatesi (Leiper & Atkinson, 1914) Szidat & Graefe, 1967 
Argentinean part of the South Atlantic Ocean for Glomericirrus macrouri (Gaevskaja, 1973) Gaevskaja, 1979 
Argentinean part of the South Atlantic Ocean for Gonocerca crassa Manter, 1934 
Argentinean part of the South Atlantic Ocean for Gonocerca phycidis Manter, 1925 
Argentinean part of the South Atlantic Ocean for Gonocerca taeniata Gaevskaya & Rodyuk, 1983 
Argentinean part of the South Atlantic Ocean for Gonocerca trematomi Byrd, 1963 
Argentinean part of the South Atlantic Ocean for Homalometron pseudopallidum Martorelli, 1986 
Argentinean part of the South Atlantic Ocean for Infundibulostomum patagonicum Gaevskaya & Kovaleva, 1977 
Argentinean part of the South Atlantic Ocean for Lampritrema meischeri (Zschokke, 1890) 
Argentinean part of the South Atlantic Ocean for Lecithaster intermedius Szidat, 1954 
Argentinean part of the South Atlantic Ocean for Lecithaster macrocotyle Szidat & Graefe, 1967 
Argentinean part of the South Atlantic Ocean for Lecithochirium floridense (Manter, 1934) Crowcroft, 1946 
Argentinean part of the South Atlantic Ocean for Lecithochirium genypteri Manter, 1954 
Argentinean part of the South Atlantic Ocean for Lecithochirium microstomum Chandler, 1935 
Argentinean part of the South Atlantic Ocean for Lecithochirium monticellii (Linton, 1898) Skrjabin & Guschanskaja, 1955 
Argentinean part of the South Atlantic Ocean for Lecithophyllum botryophoron (Olsson, 1868) Odhner, 1905 
Argentinean part of the South Atlantic Ocean for Lepidapedon taeniatum Gaevskaya & Rodyuk, 1988 
Argentinean part of the South Atlantic Ocean for Lepocreadium trullaforme Linton, 1940 
Argentinean part of the South Atlantic Ocean for Monascus filiformis (Rudolphi, 1819) Looss, 1907 
Argentinean part of the South Atlantic Ocean for Monorcheides popovicii Szidat, 1950 
Argentinean part of the South Atlantic Ocean for Neolepidapedon argentinensis Gaevskaya & Kovaleva, 1977 
Argentinean part of the South Atlantic Ocean for Neolepidapedon magnatestis (Gaevskaya & Kovaleva, 1976) Zdzitowiecki, 1990 
Argentinean part of the South Atlantic Ocean for Otodistomum pristiophori (Johnston, 1902) Woolcock, 1935 
Argentinean part of the South Atlantic Ocean for Pachycreadium gastrocotylum (Manter, 1940) Manter, 1954 
Argentinean part of the South Atlantic Ocean for Paralichthytrema patagonicum Szidat, 1960 
Argentinean part of the South Atlantic Ocean for Postmonorcheides maclovini Szidat, 1950 
Argentinean part of the South Atlantic Ocean for Prosorhynchus longisaccatus Durio & Manter, 1968 
Argentinean part of the South Atlantic Ocean for Steringotrema microacetabularis Suriano & Martorelli, 1983 
Brazil for Acanthostomum gnerii Szidat, 1954 
Brazil for Acanthostomum spiniceps (Looss, 1896) Looss, 1899 
Brazil for Allocreadium lobatum Wallin, 1909 
Brazil for Alphamphistoma canoeforma Thatcher & Jégu, 1996 
Brazil for Amazonadistoma negrensis Thatcher, 1979 
Brazil for Amphistoma attenuatum Diesing, 1836 
Brazil for Anavilhanatrema robusta Thatcher, 1992 
Brazil for Annelamphistoma elegans Thatcher, Sey & Jégu, 1996 
Brazil for Antorchis lintoni Travassos, Artigas & Pereira, 1928 
Brazil for Aspidocotylus cochleariformis Diesing, 1838 
Brazil for Auriculostoma platense (Szidat, 1954) Scholz, Aguirre-Macedo & Choudhury, 2004 
Brazil for Betamphistoma jariense Thatcher & Jégu, 1996 
Brazil for Caballerotrema annulatum (Diesing, 1850) Ostrowski de Núñez & Sattman, 2002 
Brazil for Caballerotrema arapaimense Thatcher, 1980 
Brazil for Caballerotrema aruanense Thatcher, 1980 
Brazil for Caballerotrema brasiliense Prudhoe, 1960 

 Authority

 for Genarchella porzanae (Nasir & Velasquez, 1977) Kohn, Fernandes & Cohen, 2007

Kohn et al (2007) attribute the combination to Gibson (2002). Although Gibson synonymised the genus, he did not ... [details]

 Authority

 for Prosorhynchus australis Szidat, 1961

Wrongly listed as Prosorhynchus australis (Szidat, 1961) Etchegoin, Timi, Cremonte & Lanfranchi, 2005 by Kohn et ... [details]

 Authority

 for Saccocoelioides quintus Thatcher, 1978

Sometimes referred to as S. quintus (Szidat, 1954) Thatcher, 1978, but Thatcher named the species for ... [details]

 Spelling

 for Carassotrema mugilicolum Shireman, 1965

The suffix -cola (inhabitor) is masculine and forms masculine nouns, e.g. agricola (farmer - inhabitor of ... [details]

 Status

 for Caballerotrema arapaimense Thatcher, 1980

Considered a species inquirenda by Kostadinova & Gibson (2001) [details]

 Synonymy

 for Lepocreadium trullaforme Linton, 1940

Considered a synonym of Lepidapedon garrardi (Leiper & Atkinson, 1914) by Zdzitowiecki (1900). [details]

 Synonymy

 for Tergestia pectinata (Linton, 1905) Manter, 1940

Has been considered a synonym of T. pauca by Nahhas et al. (1998). [details]

 Synonymy

 for Tergestia selenei Amato, 1983

Considered a synonym of T. pauca by Wallet & Kohn (1987). [details]

 Taxonomic remark

 for Polylekithum percai Ostrowski de Núñez, Brugni & Viozzi, 2000

Considered a synonym of Allocreadium patagonicum by Flores et al. (2004). [details]

 Taxonomic remark

 for Saccocoelioides magniovatus Szidat, 1954

Considered a synonym of S. nanii by Lunaschi (1995). [details]

 Taxonomic remark

 for Saccocoelioides quintus Thatcher, 1978

Named by Thatcher (1978) for Saccocoelioides no. 5 of Szidat (1954). [details]

 Taxonomy

 for Dadaytrema elongata Vaz, 1932

Considered a synonym of D. oxycephala by Vicente et al. (1978). [details]

 Taxonomy

 for Homalometron annahoineffae (Corrêa Gomes & de Fabio, 1970)

Probably a species of Neoapocreadium according to Cribb (2005), but the combination has not been made. [details]

 Taxonomy

 for Peracreadium annahoineffae Corrêa Gomes & de Fabio, 1970

Probably a species of Neoapocreadium according to Cribb (2005), but the combination has not been made. [details]

 Taxonomy

 for Saccocoelioides elongatus Szidat, 1954

Considered a synonym of S. nanii by Lunaschi (1996). [details]