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| Kingdom Animalia |
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Aberrantidae Wolf, 1987 -- valid |
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Acoetidae Kinberg, 1856 -- valid |
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Acrocirridae Banse, 1969 -- valid |
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Aeolosomatidae Beddard, 1895 -- valid |
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Alciopidae Ehlers, 1864 -- valid |
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Alvinellidae Desbruyeres and Laubier, 1986 -- valid |
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Ampharetidae Malmgren, 1866 -- valid |
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Amphinomidae Savigny in Lamarck, 1818 -- valid |
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Antonbruunidae Fauchald, 1977 -- valid |
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Aphroditidae Malmgren, 1867 -- valid |
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Apistobranchidae Mesnil and Caullery, 1898 -- valid |
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Arabellidae Hartman, 1944 -- invalid |
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Arenicolidae Johnston, 1835 -- valid |
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Bogueidae Hartman and Fauchald, 1971 -- invalid |
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Calamyzidae Hartmann-Schroeder, 1971 -- invalid |
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Caobangiidae Jones, 1974 -- invalid |
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Capitellidae Grube, 1862 -- valid |
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Chaetopteridae Audouin and Milne-Edwards, 1833 -- valid |
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Chrysopetalidae Ehlers, 1864 -- valid |
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Cirratulidae Ryckholt, 1851 -- valid |
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Cossuridae Day, 1963 -- valid |
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Ctenodrilidae Kennel, 1882 -- valid |
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Dinophilidae Remane, 1932 -- valid |
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Diurodrilidae Kristensen and Niilonen, 1982 -- valid |
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Dorvilleidae Chamberlin, 1919 -- valid |
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Eulepethidae Chamberlin, 1919 -- valid |
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Eunicidae Berthold, 1827 -- valid |
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Euphrosinidae Williams, 1851 -- valid |
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Fauveliopsidae Hartman, 1971 -- valid |
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Flabelligeridae Saint-Joseph, 1894 -- valid |
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Glyceridae Grube, 1850 -- valid |
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Goniadidae Kinberg, 1866 -- valid |
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Hartmaniellidae Imajima, 1977 -- valid |
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Hesionidae Grube, 1850 -- valid |
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Heterospionidae Hartman, 1963 -- invalid |
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Histriobdellidae Vaillant, 1890 -- valid |
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Ichthyotomidae Eisig, 1906 -- valid |
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Iospilidae Bergstroem, 1914 -- valid |
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Iphitimidae Fauchald, 1970 -- invalid |
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Lacydoniidae Bergstroem, 1914 -- valid |
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Longosomatidae Hartman, 1944 -- valid |
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Lopadorhynchidae -- invalid |
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Lumbrineridae Schmarda, 1861 -- valid |
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Lysaretidae Kinberg, 1865 -- invalid |
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Lysareunicidae -- invalid |
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Magelonidae Cunningham and Ramage, 1888 -- valid |
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Maldanidae Malmgren, 1867 -- valid |
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Myzostomidae Benham, 1896 -- valid |
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Nautiliniellidae Miura and Laubier, 1990 -- invalid |
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Nephtyidae Grube, 1850 -- valid |
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Nereididae Johnston, 1865 -- valid |
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Nerillidae Levinsen, 1883 -- valid |
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Oenonidae Kinberg, 1865 -- valid |
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Onuphidae Kinberg, 1865 -- valid |
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Opheliidae Malmgren, 1867 -- valid |
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Orbiniidae Hartman, 1942 -- valid |
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Oweniidae Rioja, 1917 -- valid |
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Palmyridae Kinberg, 1858 -- invalid |
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Paralacydoniidae Pettibone, 1963 -- valid |
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Paraonidae Cerruti, 1909 -- valid |
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Parergodrilidae Reisinger, 1925 -- valid |
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Pareulepidae -- invalid |
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Pectinariidae Quatrefages, 1866 -- valid |
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Pholoidae Kinberg, 1858 -- valid |
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Phyllodocidae Oersted, 1843 -- valid |
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Pilargidae Saint-Joseph, 1899 -- valid |
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Pisionidae -- invalid |
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Poecilochaetidae Hannerz, 1956 -- valid |
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Poeobiidae Heath, 1930 -- valid |
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Polygordiidae Czerniavsky, 1881 -- valid |
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Polynoidae Malmgren, 1867 -- valid |
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Polyodontidae Buchanan, 1894 -- invalid |
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Polyodontidae Buchanan, 1894 -- invalid |
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Pontodoridae Bergstroem, 1914 -- valid |
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Potamodrilidae Bunke, 1967 -- valid |
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Protodrilidae Czerniavsky, 1881 -- valid |
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Protodriloididae Purschke and Jouin, 1988 -- valid |
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Psammodrilidae Swedmark, 1952 -- valid |
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Questidae Hartman, 1966 -- valid |
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Sabellariidae Johnston, 1865 -- valid |
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Sabellidae Malmgren, 1867 -- valid |
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Sabellongidae Hartman, 1969 -- invalid |
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Saccocirridae Czerniavsky, 1881 -- valid |
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Scalibregmatidae Malmgren, 1867 -- valid |
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Serpulidae Johnston, 1865 -- valid |
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Siboglinidae Caullery, 1914 -- valid |
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Sigalionidae -- valid |
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Sphaerodoridae Malmgren, 1867 -- valid |
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Spintheridae Johnston, 1865 -- valid |
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Spionidae Grube, 1850 -- valid |
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Spirorbidae Pillai, 1970 -- invalid |
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Sternaspidae Carus, 1863 -- valid |
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Stypocapitellidae Karling, 1958 -- invalid |
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Syllidae Grube, 1850 -- valid |
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Terebellidae Malmgren, 1867 -- valid |
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Tomopteridae Johnston, 1865 -- valid |
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Trichobranchidae Malmgren, 1866 -- valid |
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Trochochaetidae Pettibone, 1963 -- valid |
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Typhloscolecidae Uljanin, 1878 -- valid |
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Uncispionidae Green, 1982 -- valid |
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