Axinoides gracilis (Linton, 1940) Sproston, 1946 accepted as Nudaciraxine gracilis (Linton, 1940) Price, 1962 (additional source)
Benedeniella posterocolpa (Hargis, 1955) Yamaguti, 1963 accepted as Parabenedeniella posterocolpa (Hargis, 1955) Brule & Bullard in Brule, Warren & Bullard, 2026 (additional source)
Calicotyle kroyeri Diesing, 1850 (additional source)
Capsala laevis (Verrill, 1875) Johnston, 1929 (additional source)
Capsaloides perugiai (Setti, 1898) Price, 1938 (additional source)
Cemocotyle carangis (MacCallum, 1913) Sproston, 1946 (additional source)
Cemocotyle noveboracensis Price, 1962 (additional source)
Cynoscionicola heteracantha (Manter, 1938) Price, 1962 (additional source)
Cynoscionicola pseudoheteracantha (Hargis, 1956) Price, 1962 (additional source)
Dactylogyrus anchoratus (Dujardin, 1845) Wagener, 1857 (additional source)
Dactylogyrus extensus Mueller & Van Cleave, 1932 (additional source)
Decacotyle floridana (Pratt, 1910) Chisholm & Whittington, 1998 (additional source)
Dendromonocotyle octodiscus Hargis, 1955 (additional source)
Diplectanum bilobatum Hargis, 1955 accepted as Cynoscionella bilobatum (Hargis, 1955) Chero, Cruces, Sáez & Luque, 2022 accepted as Cynoscionella bilobata (Hargis, 1955) Chero, Cruces, Sáez & Luque, 2022 (additional source)
Entobdella hippoglossi (Müller, 1776) Blainville, 1818 (additional source)
Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 (additional source)
Grubea cochlear Diesing, 1858 (additional source)
Gyrodactylus salmonis Yin & Sproston, 1948 (additional source)
Hargicotyle louisianensis (Hargis, 1955) Mamaev, 1972 (additional source)
Kuhnia scombri (Kuhn, 1829) Sproston, 1945 (additional source)
Ligophorus mugilinus (Hargis, 1955) Euzet & Suriano, 1977 (additional source)
Ligophorus vanbenedenii (Parona & Perugia, 1890) Euzet & Suriano, 1977 (additional source)
Macrovalvitrema micropogoni (Pearse, 1949) Hernández-Vale, Bunkley-Williams & Williams, 2016 (additional source)
Mazocraeoides olentangiensis Sroufe, 1958 (additional source)
Metamicrocotyla macracantha (Alexander, 1954) Koratha, 1955 (additional source)
Mexicotyle mexicana (Meserve, 1938) Lebedev, 1984 (additional source)
Microcotyle acanthurum Parona & Perugia, 1896 accepted as Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 (additional source)
Microcotyle archosargi MacCallum, 1913 (additional source)
Microcotyle sebastis Goto, 1894 (additional source)
Nasicola klawei (Stunkard, 1962) Yamaguti, 1968 (additional source)
Neobenedenia pacifica Bravo-Hollis, 1971 (additional source)
Neohexostoma euthynni (Meserve, 1938) Price, 1961 (additional source)
Neothoracocotyle acanthocybii (Meserve, 1938) Hargis, 1956 (additional source)
Pedocotyle minima Hargis, 1955 (additional source)
Protomicrocotyle mirabilis (MacCallum, 1918) Johnston & Tiegs, 1922 (additional source)
Pyragraphorus hollisae Euzet & Ktari, 1970 (additional source)
Pyragraphorus pyragraphorus (MacCallum & MacCallum, 1913) Sproston, 1946 (additional source)
Rhamnocercoides stichospinus (Seamster & Monaco, 1956) Domingues & Boeger, 2006 accepted as Pseudorhamnocercoides stichospinus (Seamster & Monaco, 1956) Chero, Cruces, Sáez, Iannacone & Luque, 2017 (additional source)
Rhamnocercus bairdiella Hargis, 1955 (additional source)
Rhinecotylidae Lebedev, 1979 (basis of record)
Salsuginus angularis (Mueller, 1934) Beverley-Burton, 1984 (additional source)
Scomberocotyle scomberomori (Koratha, 1955) Hargis, 1956 (additional source)
Thoracocotyle crocea MacCallum, 1913 (additional source)