| Nominal Species (n = 121) | Present allocation (n = 88) | Ref. |
|---|---|---|
| Polymorphus acutis Van Cleave & Starrett, 1940 | Polymorphus acutis | 19 |
| Corynosoma alaskensis Golvan, 1958 | Corynosoma alaskensis | 19 |
| Filicollis altmani Perry, 1942 | Polymorphus altmani | 75097 |
| Corynosoma ambispigerinum Harada, 1935 | Corynosoma strumosum | 19 |
| Echinorhynchus anatis Schrank, 1788 | Filicollis anatis | 19 |
| Echinorhynchus anatis Gmelin, 1791 | Polymorphus minutus | 19 |
| Echinorhynchus anatis mollissimae Rudolphi, 1809 | Polymorphus phippsi | 19 |
| Echinorhynchus annulatus Molin, 1858 | Bolbosoma vasculosum | 429 |
| Arhythmorhynchus anser Florescu, 1941 | Arhythmorhynchus longicollis | 19 |
| Echinorhynchus antarcticum Rennie, 1907 | Corynosoma hamanni | 75097 |
| Profilicollis antarcticus Zdzitowiecki, 1985 | Profilicollis antarcticus | 2418 |
| Corynosoma arctocephali Zdzitowiecki, 1984 | Corynosoma arctocephali | 2314 |
| Hemiechinosoma ardeae Petrochenko, et al, 1962 | Southwellina hispida | 75097 |
| Echinorhynchus aurantiacus Risso, 1826 | Bolbosoma vasculosum | 19 |
| Corynosoma australe Johnston, 1937 | Corynosoma australe | 19 |
| Echinorhynchus balaenae Gmelin, 1790 | Bolbosoma balaenae | 19 |
| Echinorhynchus balaenocephalus Owen, 1803 | Bolbosoma turbinella | 19 |
| Andracantha baylisi Zdzitowiecki, 1986 | Andracantha baylisi | 84630 |
| Corynosoma baylisi Zdzitowiecki, 1986 | Andracantha baylisi | 2316 |
| Corynosoma beaglense Laskowski, Jeżewski & Zdzitowiecki, 2008 | Corynosoma beaglense | 84630 |
| Corynosoma bipapillum Schmidt, 1965 | Corynosoma constrictum | 75097 |
| Bolbosoma bobrovoi Krotov & Delamure, 1952 | Bolbosoma bobrovoi | 19 |
| Echinorhynchus borealis Gmelin, 1791 | Polymorphus phippsi | 19 |
| Echinorhynchus boschadis Schrank, 1788 | Polymorphus minutus | 19 |
| Filicollis botulus Van Cleave, 1916 | Profilicollis botulus | 19 |
| Arhythmorhynchus brevis Van Cleave, 1916 | Arhythmorhynchus brevis | 19 |
| Echinorhynchus bullosum Linstow, 1892 | Corynosoma bullosum | 75097 |
| Corynosoma cameroni Van Cleave, 1953 | Corynosoma cameroni | 19 |
| Echinorhynchus capitatum Linstow, 1880 | Bolbosoma capitatum | 19 |
| Corynosoma capsicum Golvan & Mokhayer, 1973 | Corynosoma capsicum | 19 |
| Corynosoma cetaceum Johnston & Best, 1942 | Polymorphus cetaceum | 2421 |
| Corynosoma clavatum Goss, 1941 | Corynosoma clavatum | 19 |
| Echinorhynchus collaris Schrank, 1792 | Polymorphus minutus | 19 |
| Arhythmorhynchus comptus Van Cleave & Rausch, 1950 | Arhythmorhynchus comptus | 19 |
| Corynosoma constrictum Van Cleave, 1918 | Corynosoma constrictum | 19 |
| Echinorhynchus contortus Bremser, 1821 | Polymorphus contortus | 75097 |
| Polymorphus corynosoma Travassos, 1915 | Hexaglandula corynosoma | 2178 |
| Southwellina dimorpha Schmidt, 1973 | Southwellina dimorpha | 19 |
| Arhythmorhynchus duocinctus Belopolskaya, 1958 | Southwellina hispida | 75097 |
| Corynosoma enhydri Morozov, 1940 | Corynosoma enhydri | 19 |
| Corynosoma enhydris Afanasev, 1941 | Corynosoma enhydri | 75097 |
| Corynosoma evae Zdzitowiecki, 1984 | Corynosoma evae | 3477 |
| Corynosoma falcatum Van Cleave, 1953 | Corynosoma falcatum | 19 |
| Echinorhynchus filicollis Rudolphi, 1809 | Filicollis anatis | 19 |
| Polymorphus formosus Schmidt & Kuntz, 1967 | Profilicollis formosus | 19 |
| Echinorhynchus frassoni Molin, 1858 | Arhythmorhynchus frassoni | 19 |
| Arhythmorhynchus fuscus Harada, 1929 | Southwellina hispida | 75097 |
| Echinorhynchus gibbosus Rudolphi, 1809 | Corynosoma strumosum | 19 |
| Corynosoma gibsoni Zdzitowiecki, 1986 | Corynosoma gibsoni | 3477 |
| Corynosoma gravida Alegret, 1941 | Andracantha gravida | 75097 |
| Corynosoma hadweni Van Cleave, 1953 | Corynosoma hadweni | 19 |
| Echinorhynchus hamanni Linstow, 1892 | Corynosoma hamanni | 75097 |
| Bolbosoma hamiltoni Baylis, 1929 | Bolbosoma hamiltoni | 19 |
| Corynosoma hannae Zdzitowiecki, 1984 | Corynosoma hannae | 3477 |
| Arhythmorhynchus hispidus Van Cleave, 1925 | Southwellina hispida | 75097 |
| Echinorhynchus invaginabilis Linstow, 1902 | Arhythmorhynchus longicollis | 19 |
| Hexaglandula karachiensis Bilgees, 1971 | Hexaglandula karachiensis | 19 |
| Polymorphus kenti Van Cleave, 1947 | Polymorphus kenti | 19 |
| Corynosoma kurilensis Gubanov, 1952 | Corynosoma kurilensis | 19 |
| Echinorhynchus laevis Linstow, 1905 | Filicollis anatis | 19 |
| Echinorhynchus longicollis Villot, 1875 | Arhythmorhynchus longicollis | 19 |
| Corynosoma longilemniscatus Machado, 1961 | Corynosoma longilemniscatus | 19 |
| Corynosoma macrosomum Neiland, 1962 | Corynosoma macrosomum | 19 |
| Echinorhynchus macrourus Bremser, 1821 | Arhythmorhynchus longicollis | 19 |
| Corynosoma magdaleni Montreuil, 1958 | Corynosoma magdaleni | 19 |
| Polymorphus magnus Skrjabin, 1913 | Polymorphus magnus | 19 |
| Polymorphus major Lundström, 1942 | Profilicollis major | 19 |
| Profilicollis major Lundström, 1942 | Profilicollis major | 2418 |
| Corynosoma mandarinca Oschmarin, 1963 | Corynosoma mandarinca | 19 |
| Corynosoma mergi Lundstroem, 1941 | Andracantha mergi | 19 |
| Echinorhynchus minutus Goeze, 1782 | Polymorphus minutus | 19 |
| Corynosoma mirabilis Skrjabin, 1966 | Corynosoma mirabilis | 19 |
| Echinorhynchus mutabilis Rudolphi, 1819 | Hexaglandula mutabilis | 75097 |
| Bolbosoma nipponicum Yamaguti, 1939 | Bolbosoma nipponicum | 19 |
| Profilicollis novaezelandensis Brockerhoff & Smales, 2002 | Profilicollis novaezelandensis | 2418 |
| Corynosoma obtuscens Lincicome, 1943 | Corynosoma obtuscens | 19 |
| Polymorphus obtusus Van Cleave, 1918 | Polymorphus obtusus | 19 |
| Corynosoma osmeri Fujita, 1921 | Corynosoma strumosum | 19 |
| Corynosoma otariae Morini & Boero, 1961 | Corynosoma otariae | 19 |
| Corynosoma pacifica Nikolskii, 1974 | Corynosoma pacifica | 19 |
| Polymorphus petrochenkoi Schmidt, 1969 | Arhythmorhynchus petrochenkoi | 75097 |
| Corynosoma phalacrocoracis Yamaguti, 1939 | Andracantha phalacrocoracis | 75097 |
| Polymorphus phippsi Kostylev, 1922 | Polymorphus phippsi | 19 |
| Bolbosoma physeteris Gubanov, 1952 | Bolbosoma physeteris | 19 |
| Echinorhynchus polymorphus Bremser, 1824 | Filicollis anatis | 19 |
| Polymorphus polymorphus magnus Skrjabin, 1913 | Polymorphus magnus | 19 |
| Polymorphus polymorphus phippsi Kostylev, 1922 | Polymorphus phippsi | 19 |
| Echinorhynchus porrigens Rudolphi, 1814 | Bolbosoma balaenae | 19 |
| Corynosoma pseudohamanni Zdzitwiecki, 1984 | Corynosoma pseudohamanni | 2256 |
| Corynosoma rauschi Golvan, 1958 | Corynosoma rauschi | 19 |
| Echinorhynchus reductum Linstow, 1905 | Corynosoma reductum | 19 |
| Echinorhynchus roseus Molin, 1858 | Arhythmorhynchus frassoni | 19 |
| Echinorhynchus ruber Collett, 1886 | Bolbosoma turbinella | 429 |
| Echinorhynchus rubicundus Molin, 1859 | Arhythmorhynchus frassoni | 19 |
| Arhythmorhynchus sachalinensis Krotov & Petrochenko, 1958 | Arhythmorhynchus teres | 75097 |
| Bolbosoma scomberomori Wang, 1980 | Bolbosoma scomberomori | 19 |
| Echinorhynchus semerme Forssell, 1904 | Corynosoma semerme | 19 |
| Corynosoma septentrionalis Treshchev, 1966 | Corynosoma septentrionalis | 19 |
| Corynosoma seropedicus Machado, 1970 | Corynosoma seropedicus | 19 |
| Echinorhynchus serrani Rudolphi, 1819 | Bolbosoma vasculosum | 19 |
| Corynosoma shackletoni Zdzitowiecki, 1978 | Corynosoma shackletoni | 19 |
| Corynosoma similis Neiland, 1962 | Corynosoma similis | 19 |
| Corynosoma singularis Skrjabin & Nilolskii, 1971 | Corynosoma singularis | 19 |
| Corynosoma sipho Railliet & Henry, 1907 | Corynosoma hamanni | 75097 |
| Echinorhynchus sphaerocephalus Bremser, 1819 | Polymorphus sphaerocephalus | 75097 |
| Echinorhynchus strumosum Rudolphi, 1802 | Corynosoma strumosum | 19 |
| Arhythmorhynchus teres Van Cleave, 1920 | Arhythmorhynchus teres | 19 |
| Polymorphus texensis Webster, 1948 | Polymorphus texensis | 19 |
| Bolbosoma thunni Harada, 1935 | Bolbosoma thunni | 19 |
| Arhythmorhynchus tigrinus Moghe & Das, 1953 | Arhythmorhynchus tigrinus | 19 |
| Echinorhynchus trichocephalus Leuckart, 1876 | Arhythmorhynchus trichocephalus | 75097 |
| Polymorphus trochus Van Cleave, 1945 | Polymorphus trochus | 19 |
| Filicollis trophimenkoi Atrashkevich, 1982 | Filicollis trophimenkoi | 19 |
| Bolbosoma tuberculata Skrjabin, 1970 | Bolbosoma tuberculata | 19 |
| Corynosoma tunitae Weiss, 1914 | Corynosoma tunitae | 19 |
| Echinorhynchus uncinatus Kaiser, 1893 | Arhythmorhynchus uncinatus | 75097 |
| Corynosoma validum Van Cleave, 1953 | Corynosoma validum | 19 |
| Echinorhynchus vasculosum Rudolphi, 1819 | Bolbosoma vasculosum | 19 |
| Corynosoma ventronudum Skrjabin, 1959 | Corynosoma ventronudum | 19 |
| Corynosoma villosum Van Cleave, 1953 | Corynosoma villosum | 19 |
| Corynosoma wegeneri Heinze, 1934 | Corynosoma wegeneri | 19 |